How can I migrate to Office 365 using EdbMails?

The whole Office 365 migration process using the EdbMails Office 365 Migration Tool is one of the simplest there is – just connect to your source and target servers and let it do its work. Step 1: Download and install EdbMails. Step 2: Connect to the source using a global administrator account. Step 3: Choose which mailboxes and folders to migrate. Step 4: Connect to the destination server and map the mailboxes. Step 5: Begin the Office 365 migration process.

What are the reasons for migrating to Office 365?

Most teams move to Office 365 for some combination of these: Cost savings: Less spent on on-premise hardware, fewer painful upgrade cycles, and ongoing maintenance becomes someone else's problem. Scalability: Size your environment up or down as the business shifts. Accessibility: Mailboxes, documents, and apps reachable from anywhere, on whatever device the user happens to have. Collaboration: SharePoint, Teams, OneDrive, and Yammer working together for actual teamwork instead of email tag. Security: Built-in threat protection, data loss prevention, and encryption — without needing to bolt on third-party tools. Maintenance: Microsoft handles updates and patches, which frees IT staff for work that actually moves the business. Compliance: Features that help with HIPAA, GDPR, and the rest of the alphabet soup.

What types of Microsoft 365 migration does EdbMails support?

EdbMails covers all the standard Office 365 mailbox migration types. Cutover migration moves every source mailbox into the Office 365 tenant in a single pass — straightforward when the org is small enough to switch over at once. Staged migration breaks the work into phases, useful when you'd rather not move everyone at the same time. Hybrid migration ties on-premise Exchange and Office 365 together for organizations running both. IMAP migration is also on the menu — Gmail to Office 365 being one of the more common examples.

What are the best practices for Office 365 email migration?

The best practices guide for Office 365 mailbox migration covers all the key steps and recommendations to ensure a smooth and successful migration.

What are the migration challenges with Microsoft 365?

There are several common challenges with Office 365 mailbox migration including data integrity, downtime, user access continuity, and large mailbox handling. Detailed breakdown of these challenges is available in EdbMails' migration challenges guide.

Can I use EdbMails to migrate Microsoft 365 to On-Premise Exchange server?

Yes. EdbMails moves Office 365 mailbox data back to on-premise Exchange, with all server versions supported — Exchange 2010, 2013, 2016, and 2019. Step-by-step guidance for migrating from Office 365 to on-premise Exchange is available separately.

What are the steps to migrate Office 365 Public folder with EdbMails?

Public folder migration is straightforward with EdbMails — and there's no PowerShell scripting involved at any point. Step 1: Launch EdbMails and choose Office 365 migration. Step 2: Pick 'Connect to Public folder' as the migration operation. Step 3: Connect to the source Office 365 server and select the public folders. Step 4: Connect to the target Office 365 server and start the migration.

Can I migrate a Microsoft 365 Public folder to Shared mailbox with EdbMails?

Yes - Office 365 public folder to shared mailbox migration is one of the supported scenarios.

How to migrate a large Archive mailbox to Office 365 with EdbMails?

For migrating a large archive mailbox to Office 365: Step 1: Enable In-Place Archive in your Office 365 tenant. Step 2: Download and install EdbMails. Step 3: Connect to the source Office 365 server. Step 4: Pick the large archive mailbox you want to move. Step 5: Connect to the target Office 365 server. Step 6: Start the migration. Every piece of mailbox data — emails, contacts, calendars, tasks, attachments — comes across with full accuracy. No data loss, no corruption, nothing scrambled.

Which license do I need to buy to migrate Office 365 Mailboxes?

You'll need an Office 365 Migration license to move your mailboxes from Office 365.

Can I migrate only new emails using EdbMails without duplicates on the target server?

Yes. By default, the first run is a full migration. From the second run onward, incremental migration kicks in automatically, picking up only new or modified items — no duplicates land on the target. You can also filter by last migration date if you'd rather skip rescanning the whole mailbox each time.

Do I need to pay for Shared mailbox migration?

Yes — each shared mailbox uses up one license, same as a regular mailbox.

Is there a Free Trial version available to test Microsoft 365 migration features?

Yes — there's a Free Trial that opens up every Office 365 migration feature for testing. Up to 30 items per folder from every mailbox come across during the trial.

Is it possible to migrate specific data from source Office 365 to target Office 365?

Definitely. EdbMails handles selective Office 365 migration through filters that you can shape pretty granularly — message received date, sender address, recipients (CC and BCC included), subject line, attachment names, and read/unread status all work as filter criteria.

How do I choose the best Office 365 migration software?

Compare migration tools across capabilities like license type, concurrent mailbox migration, automatic throttling management, incremental migration, public folder licensing, and technical support. Tools that offer lifetime licenses, free upgrades, and 24/7 support typically deliver better long-term value than subscription-based options.

How does the licensing work?

The licensing model is per-mailbox: each migrated mailbox consumes one license, calculated against the source mailbox count. Nothing stops you from running multiple migration jobs in parallel across different machines, as long as you've got licenses left in the pool.

Do you have Office 365 Migration checklists?

Yes - Office 365 migration checklists are available to help you plan and execute your migration successfully.

How many licenses should I purchase for Public folder migration?

Public folder migration takes 20 mailbox licenses. Once those are allocated, you can migrate unlimited public folders from a domain — there's no per-folder cost beyond that.

Does EdbMails support migrating Shared mailboxes to Office 365?

Yes — shared mailbox migration to Office 365 tenants is fully supported. The full set of source items is covered: mailboxes, shared mailboxes, public folders, archive mailboxes, and more. EdbMails handles the shared-mailbox mapping automatically and brings across the contents — emails, attachments, contacts, calendars, tasks, and notes.

Is there any size limitation for Microsoft 365 mailbox migration?

There aren't any size limits on the EdbMails side. Microsoft does enforce its own restrictions, though — those are detailed in the EdbMails Knowledge Base article on Microsoft 365 mailbox size limitations.

Does EdbMails create the mailboxes automatically on the target O365 server?

Yes, EdbMails will automatically create the mailboxes for you on the target and allocate the licenses to be assigned.

Is it possible to map one source folder to the target folder of my choice on the server?

Yes, EdbMails allows customized folder mapping to route source folders to target folders of your choice.

How much time does it usually require to migrate Office 365 mailboxes?

The duration of Office 365 migration depends on a few moving parts. Detailed breakdown of Office 365 migration duration is available in EdbMails' tenant-to-tenant migration guide.

Does the software support all languages during migration?

Yes — EdbMails supports all languages during Office 365 migration.

Can I access the source and target mailbox during migration?

Yes — your mailbox data stays accessible the whole time the migration is running. No server downtime to plan around.

Can EdbMails remove deleted source items from the target Office 365 folders?

Yes — EdbMails can sync deletions from source to target. Tick the 'Remove deleted source items from target folders' option in the main migration window, then run a follow-up migration.

Can I migrate emails from Microsoft 365 to IMAP server using EdbMails?

Yes — Office 365 emails can move to any IMAP-enabled server. The supported list covers most of the popular ones: Outlook, Gmail, Zoho, Zimbra, IceWarp, cPanel, Plesk, GoDaddy, Rackspace, AWS WorkMail, Bluehost, and Dreamhost.

Does EdbMails support Office 365 to Hosted Exchange migration?

Yes — Office 365 to Hosted Exchange is supported. A common example is migrating from Office 365 to a Rackspace-hosted Exchange server.

Will I require a different license for Primary mailbox migration and Archive mailbox migration?

No, you only need one license if both the UPN (User Principal Name) are identical for the Primary and Archive mailboxes.

Does EdbMails manage mailbox mapping from source to target Microsoft 365 server automatically?

Yes, EdbMails automates the mailbox mapping between source and target tenants. For the case when there are hundreds or thousands of mailboxes to be migrated, manual mapping would be a terrible job and EdbMails saves a lot of time.

Does the software generate duplicates when running consecutive Microsoft 365 migrations?

No — incremental migration handles this. Subsequent runs only carry across new and modified items, which keep the target server clean of duplicates.

Does EdbMails handle mailbox mapping between source and target Microsoft 365 servers automatically?

EdbMails automates mailbox mapping between the source and target Tenants, which is useful for large-scale migrations, saving considerable time and effort compared to manual mapping.

Does EdbMails need scripting via PowerShell for Office 365 migration?

No. EdbMails Office 365 migration is an all-graphical-user-interface experience without need of using any PowerShell scripts, or any command-line instruments, or making any API calls. This is regardless of whether it is about migrating mailboxes across tenants, public folders or mailbox archives, hybrid configuration.

What is an Office 365 mailbox migration tool?

An Office 365 mailbox migration tool moves mailbox content, including emails, attachments, folders, contacts, and calendars, into Microsoft 365.

Is EdbMails also an Office 365 email migration tool, not just a mailbox migration tool?

Yes. As an Office 365 email migration tool and Microsoft 365 email migration tool, EdbMails covers full mailbox migration (email, calendar, contacts, tasks, and more) as well as email-only scenarios such as Office 365 to IMAP and Office 365 to Gmail. Office 365 is the source migrating to Exchange, IMAP, and Gmail, and Bulk PST files can be imported into Office 365. The same Office 365 Mailbox Migration Tool and Microsoft 365 Mailbox Migration Tool handle each of these scenarios. SharePoint, OneDrive, and Microsoft Teams (including chats and channels) migrate under a separate license category.

How can I migrate to Office 365 using EdbMails?

The whole Office 365 migration process using the EdbMails Office 365 Migration Software is one of the simplest there is – just connect to your source and target servers and let it do its work. Step 1: Download and install EdbMails. Step 2: Connect to the source using a global administrator account. Step 3: Choose which mailboxes and folders to migrate. Step 4: Connect to the destination server and map the mailboxes. Step 5: Begin the Office 365 migration process.

What are the reasons for migrating to Office 365?

Most teams move to Office 365 for some combination of these: Cost savings: Less spent on on-premise hardware, fewer painful upgrade cycles, and ongoing maintenance becomes someone else's problem. Scalability: Size your environment up or down as the business shifts. Accessibility: Mailboxes, documents, and apps reachable from anywhere, on whatever device the user happens to have. Collaboration: SharePoint, Teams, OneDrive, and Yammer working together for actual teamwork instead of email tag. Security: Built-in threat protection, data loss prevention, and encryption — without needing to bolt on third-party tools. Maintenance: Microsoft handles updates and patches, which frees IT staff for work that actually moves the business. Compliance: Features that help with HIPAA, GDPR, and the rest of the alphabet soup.

What types of Microsoft 365 migration does EdbMails support?

EdbMails supports all the standard Office 365 migration types — cutover, staged, hybrid, and IMAP — covering small single-pass switchovers, phased moves for larger orgs, on-premises/cloud coexistence, and email-only sources like Gmail. Each method has different requirements and size limits.

What are the best practices for Office 365 email migration?

EdbMails provides a detailed best practices guide for Office 365 mailbox migration covering all key steps and recommendations for a successful migration.

What are the migration challenges with Microsoft 365?

Common Office 365 migration challenges include incomplete pre-migration assessments, mismatched migration types, poor coordination between IT and business units, and inadequate end-user communication. EdbMails provides detailed documentation on Office 365 Migration Challenges and how to address them.

Can I use EdbMails to migrate Microsoft 365 to On-Premise Exchange server?

Yes. EdbMails moves Office 365 mailbox data back to on-premise Exchange, with all server versions supported — Exchange 2010, 2013, 2016, and 2019.

What are the steps to migrate Office 365 Public folder with EdbMails?

Public folder migration is straightforward with EdbMails — and there's no PowerShell scripting involved at any point. Step 1: Launch EdbMails and choose Office 365 migration. Step 2: Pick 'Connect to Public folder' as the migration operation. Step 3: Connect to the source Office 365 server and select the public folders. Step 4: Connect to the target Office 365 server and start the migration.

Can I migrate a Microsoft 365 Public folder to Shared mailbox with EdbMails?

Yes - Office 365 public folder to shared mailbox migration is one of the supported scenarios.

How to migrate a large Archive mailbox to Office 365 with EdbMails?

For migrating a large archive mailbox to Office 365: Step 1: Enable In-Place Archive in your Office 365 tenant. Step 2: Download and install EdbMails. Step 3: Connect to the source Office 365 server. Step 4: Pick the large archive mailbox you want to move. Step 5: Connect to the target Office 365 server. Step 6: Start the migration. Every piece of mailbox data — emails, contacts, calendars, tasks, attachments — comes across with full accuracy. No data loss, no corruption, nothing scrambled.

Which license do I need to buy to migrate Office 365 Mailboxes?

You'll need an Office 365 Migration license to move your mailboxes from Office 365.

Can I migrate only new emails using EdbMails without duplicates on the target server?

Yes. By default, the first run is a full migration. From the second run onward, incremental migration kicks in automatically, picking up only new or modified items — no duplicates land on the target. You can also filter by last migration date if you'd rather skip rescanning the whole mailbox each time.

Do I need to pay for Shared mailbox migration?

Yes — each shared mailbox uses up one license, same as a regular mailbox.

Is there a Free Trial version available to test Microsoft 365 migration features?

Yes — there's a Free Trial that opens up every Office 365 migration feature for testing. Up to 30 items per folder from every mailbox come across during the trial.

Is it possible to migrate specific data from source Office 365 to target Office 365?

Definitely. EdbMails handles selective Office 365 migration through filters that you can shape pretty granularly — message received date, sender address, recipients (CC and BCC included), subject line, attachment names, and read/unread status all work as filter criteria.

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All-in-one Recovery and Migration
- EDB Recovery and Migration
- OST, PST, MBOX, NSF, EML, MSG
- Office 365, Exchange Migration
- SharePoint, OneDrive & Teams
- Google Workspace Migration
- IMAP Migration
- Duplicate Remover
- EdbMails Data Recovery
- Backup Solutions
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EDB Recovery and Migration

EdbMails lets you recover corrupted, damaged, and offline Exchange EDB files, convert EDB mailboxes to PST format, and directly migrate mailbox data to Office 365 and live Exchange Server.

EDB to PST

Recover corrupted, damaged, offline EDB files and convert Exchange EDB mailboxes to PST file format

Public Folder to Exchange

Migrate public folders from an Exchange offline EDB file to live Exchange Server

EDB to Live Exchange Migration

Directly migrate offline Exchange database (EDB) files to live Exchange server

Archive Mailbox to Office 365

Migrate archive mailboxes from offline EDB files directly to Office 365

EDB to Office 365 Migration

Directly migrate offline Exchange database (EDB) files to Office 365

Public Folder to Office 365

Migrate public folders from an offline Exchange EDB file to Office 365

OST, PST, MBOX, NSF, EML, MSG Export and Migration

EdbMails lets you to recover OST and PST files, export OST, PST, MBOX, NSF, EML, and MSG files to PST files, and directly migrate OST, PST, MBOX, and NSF mailbox data to Office 365 and live Exchange Server.

OST Recovery and Migration

Recover offline OST files, convert OST to PST, and migrate OST to Office 365 and Exchange Server

PST Recovery and Migration

Recover Outlook PST files , Export PST to PST, migrate PST to Office 365 and Exchange Server

MBOX Export and Migration

Export MBOX to PST, migrate MBOX to Office 365 and Exchange Server

NSF Export and Migration

Export NSF to PST, migrate NSF to Office 365 and Exchange Server

EML to PST Export

Convert EML files to Outlook PST files

PST to MSG Export

Convert Outlook PST file to MSG file format

MSG to PST Export

Export MSG files to Outlook PST files

Office 365, Exchange Migration

EdbMails lets you securely migrate mailboxes across Microsoft 365, Exchange, Google Workspace (G Suite), and IMAP-supported servers such as Outlook, Gmail, Zimbra, Zoho Mail, and cPanel, ensuring zero downtime.

Office 365 Migration

Migrate between Office 365 tenants, Office 365 to Exchange, Office 365 to PST, PST files to Office 365.

Exchange Migration

Migrate between any Exchange Servers, Exchange to Office 365, Exchange to PST, PST files to Exchange.

Tenant to Tenant Migration

Migrate Mailboxes, Public Folders, Archive Mailboxes between Office 365 Tenants.

Exchange to Office 365

Migrate Mailboxes, Public Folders, Archive Mailboxes from live Exchange server to Office 365.

Office 365 to IMAP

Migrate Office 365 to IMAP, Office 365 to Gmail, Office 365 to Outlook, Office 365 to Zoho etc.

Exchange to IMAP

Migrate from live Exchange Server to IMAP servers such as Gmail, Outlook, and Zoho Mail.

Public Folder to Office 365

Migrate Public Folders between Office 365 tenants with complete folder hierarchy and mailbox data integrity.

Exchange to PST

Export live Exchange Server mailboxes, public folders, and archive mailboxes to Outlook PST files.

SharePoint, OneDrive & Microsoft Teams Migration

EdbMails lets you migrate SharePoint sites, OneDrive data, Microsoft Teams, teams, channels, chats, permissions, and documents between Microsoft 365 tenants while maintaining the existing folder structure and data integrity.

SharePoint Online Migration

Migrate documents, lists, files and folders from SharePoint sites.

OneDrive for Business Migration

Migrate documents, lists, files, folders, private chats from OneDrive.

Microsoft Teams Migration

Migrate Teams, chats, channels, documents, files and folders etc.

Google Workspace / G Suite Migration

EdbMails offers secure Google Workspace migration to Office 365, Exchange, or IMAP, and export to PST covering emails, contacts, calendars and tasks.

Google Workspace Migration

Migrate emails, calendars, contacts, tasks from Google Workspace to Google Workspace, office 365, Exchange and IMAP. Export to PST

Google Workspace to Office 365

Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to Office 365

Google Workspace to Exchange Server

Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to on-Premise Exchange Server

Google Workspace to IMAP

Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to IMAP, Outlook, Zimbra, Zoho etc.

Google Workspace to Google Workspace

Migrate emails, calendars, contacts, tasks between two Google Workspace / G Suite tenants

Google Workspace to PST

Export emails, calendars, contacts, tasks from Google Workspace / G Suite to Outlook PST files

IMAP Migration

EdbMails IMAP Migration tool lets you easily migrate emails from IMAP servers such as Outlook, Gmail, Zoho Mail, Zimbra, cPanel, and more. Supports IMAP to IMAP, Office 365, Exchange Server, PST, and bulk PST to IMAP migration.

IMAP Email Backup & Migration

Backup and migrate emails from IMAP servers to PST, Office 365, and On-Premises Exchange Server

IMAP to Office 365

Migrate emails, folders, and attachments from IMAP servers to Office 365

IMAP to Exchange

Migrate emails, folders, and attachments from IMAP servers to on-premises Exchange Server

IMAP to PST

Export emails, folders, and attachments from IMAP servers to Outlook PST files for backup

PST to IMAP

Migrate emails, folders, and attachments from bulk PST files to IMAP servers

Duplicate Remover

EdbMails Duplicate Remover lets you easily remove duplicate items from Office 365 and Exchange Server, and from IMAP, Outlook, Gmail, Zimbra, Zoho Mail, etc., ensuring a clean and organized mailbox.

Remove Duplicates

Easily clean up your Office 365, Exchange, Outlook and IMAP accounts by removing duplicate emails.

Remove Duplicates from Office 365

Remove duplicate emails, calendars, contacts, journal tasks, etc. from Office 365.

Remove Duplicates from Exchange Server

Remove duplicate emails, calendars, contacts, journal tasks, etc. from live Exchange Server.

Remove Duplicates from IMAP, Outlook

Remove duplicate emails, attachments from IMAP, Outlook, Gmail, Zimbra, Zoho Mail etc.

Exchange, SharePoint, OneDrive, Teams and Office 365 Backup

EdbMails enables secure, automated backup and recovery for Microsoft 365 services including Exchange Online, SharePoint, OneDrive, Teams, and Live Exchange Server with complete data protection and restore flexibility.

Office 365 Backup

Incremental, Granular, Encrypted and Compressed Office 365 Mailboxes Backup

Exchange Server Backup

Incremental, Granular, Encrypted and Compressed Exchange Mailboxes Backup

SharePoint, OneDrive & Teams Backup

Backup Online site collections, Team sites, Office 365 groups, all documents etc.

EdbMails Data Recovery

EdbMails Data Recovery Software lets you recover permanently deleted data, including photos, videos, documents, and archived files, from partitions on hard drives, SSDs, USB drives, SD cards, and external storage devices.

EdbMails Data Recovery

Recover and restore permanently deleted data from hard drives, SSDs, USB drives, SD cards, and etc.

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Office 365 Migration Tool

Complete solution for Office 365 Migration

EdbMails Office 365 Migration Tool covers multiple migration paths for organizations moving Microsoft 365 data, including tenant-to-tenant, Office 365 to Exchange Server, Office 365 to PST, and PST to Office 365. It migrates mailboxes, public folders, archives, and shared mailboxes automatically, with no PowerShell required and zero duplicates.

Just $299 for 100 Mailboxes

Office 365 to Office 365 Office 365 to Exchange Office 365 to PST Office 365 Public Folder to Office 365 Office 365 Archive Mailbox to Office 365 Office 365 to IMAP PST to Office 365 Office 365 Tenant to Tenant Migration

Office 365 Migration Tool Now on Azure Marketplace!

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Accelerate Your Microsoft 365 Migration with
Concurrent Mailbox Migration - Now 10X Faster!

All-in-one Office 365 Migration Tool

EdbMails Office 365 Migration Software provides Microsoft 365 migration capabilities for live Exchange, Hosted Exchange, SharePoint, OneDrive, Teams, and IMAP environments within a single application. The interface provides a straightforward workflow for configuring and running migration jobs. Whether you're moving 10 mailboxes or 10,000, the tool supports migration projects across different scales with built-in migration settings and controls.

New to Office 365 migration? These resources can help: What is Office 365 Migration? for the basics, the Office 365 migration guide for step-by-step instructions, the Office 365 migration checklist for what to prepare beforehand, and Office 365 migration methods if you're still deciding on an approach.

Organizations looking for a Microsoft 365 Migration Tool can use EdbMails for supported cloud-to-cloud, cloud-to-on-premises, PST import, IMAP, and export migration requirements.

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Enjoy a user-friendly Office 365 migration experience

EdbMails Office 365 Migration Software offers an intuitive, straightforward setup process, making migration tasks easy to manage. With a user-friendly GUI, it features a clean design, consistent layout, and responsive performance across devices. One-click selection covers the entire mailbox, public folder, and archive mailbox data — every item from Inbox, Calendar, Contacts, and the rest migrates accurately, with no duplicates. Clear navigation and immediate feedback guide you through the migration in a handful of clicks. Applying preferential migration settings and filters is built-in and effortless, lifting both efficiency and performance.

Step-by-step wizard instructions and tutorials are on hand at every stage, so the migration runs smoothly even if it’s your first time.

Safeguard your Microsoft 365 data migration with EdbMails

Security sits at the core of every migration. EdbMails is ISO 27001:2013 certified and fully GDPR compliant, with SSL/TLS encryption protecting data in transit, OAuth 2.0 handling authorization, and Multi-Factor Authentication (MFA) layered on top. Modern Authentication is used on every Microsoft 365 endpoint — a more solid approach than the traditional methods. You get the benefits of your new Office 365 environment with stronger security and real peace of mind.

Automate your Microsoft 365 migration

For Microsoft 365 migration, EdbMails provides automation across the workflow, from selecting source mailboxes and folders to mapping them with the destination and running the migration. EdbMails can automatically create target mailboxes and assign Microsoft 365 licenses. Source mailboxes can be mapped to their Office 365 destinations using available user attributes, and administrators can review or modify the mappings where required. Incremental migration is enabled for subsequent runs to process eligible new or changed items according to the selected migration settings. These capabilities reduce repetitive administration for projects ranging from departmental migrations to larger enterprise rollouts, making EdbMails a complete Microsoft 365 migration solution rather than a single-purpose utility.

Automatic throttling management, zero downtime

EdbMails Office 365 migration software automatically manages throttling errors, maintaining consistent transfer rates even during peak server hours and achieving zero downtime. The usual culprits are handled out of the box — "The server cannot service this request right now" and "Active Directory is unavailable," along with related issues. Automatic retry mechanisms cover temporary throttling and connection hiccups, so jobs resume without manual intervention. Concurrent mailbox migration squeezes out more performance while staying within Microsoft’s throttling limits. By prioritizing reliability and following Microsoft’s Office 365 migration best practices, EdbMails keeps the migration running while the source mailbox stays accessible and end users keep working as usual throughout the process.

Automatic Office 365 Throttling Management

Microsoft 365 migration tool with flexible options

Flexible migration options

EdbMails Office 365 migration software provides flexible migration paths for Microsoft 365 projects. The Tenant-to-Tenant migration option transfers data directly between two Office 365 tenants — well-suited to mergers, acquisitions, and departmental reorganizations. The Office 365 to Exchange migration feature handles transitions back to on-premise Exchange, keeping email infrastructure continuity intact when an organization needs to host mail on its own servers. For consolidating group mailboxes, the Group mailbox migration feature moves group mailboxes to a new tenant or within your existing Office 365 environment. The PST-to-Office 365 feature performs a direct migration of bulk PST files to Office 365, streamlining mailbox access when older PST archives need to land in Exchange Online. The Office 365 to IMAP migration feature transfers email from Microsoft 365 to any IMAP server — handy when teams move providers — and the Office 365 to PST export feature saves mailbox data to PST files for offline access, archiving, or legal use cases. Covering these migration paths in one application makes EdbMails a complete Microsoft 365 migration solution.

Extensive support for all migration types

EdbMails supports Office 365 migration methods for different source environments and migration requirements. A cutover migration moves the applicable mailboxes to Microsoft 365 in a coordinated migration window. A staged migration moves mailboxes to Office 365 in planned stages, allowing administrators to phase the transition. Hybrid migrations support coexistence between an on-premises Exchange environment and Microsoft 365. Review the requirements and limitations of each method before selecting the approach for your environment.

Support for all Office 365 Migration Types

High performance Office 365 migration software

Enhanced Office 365 migration performance

Microsoft 365 migration throughput varies with mailbox size, item count, network bandwidth, system resources, service conditions, and throttling. EdbMails Office 365 Migration Software improves overall throughput by running multiple mailbox migrations in parallel according to the configured environment. The number of concurrent migrations depends on the migration machine's logical processors, available RAM, upload bandwidth, and Microsoft 365 service conditions. More processors can support additional parallel processing, but available bandwidth and service throttling can still affect throughput. The setting is exposed in the application so you can tune it to your environment. Pause and resume are built in, so jobs can be stopped and continued later. On subsequent runs against the same target, EdbMails uses incremental migration to process eligible new or changed items according to the selected migration settings, helping reduce repeated data transfer.

Advanced Microsoft 365 migration software settings

EdbMails migrates everything by default, all mailboxes, all folder types, and all items. When you need finer control, the application provides filter settings that let you narrow down what gets moved without touching anything else. Date filters let you choose to migrate items received after a specific date, items older than a certain date, or everything within a defined date range. Folder filters let you include or exclude specific folder types entirely. Junk Email and Deleted Items are excluded by default — most organizations have no reason to carry that across. Standard folders such as Inbox, Calendar, Contacts, Tasks, and Notes can each be toggled independently, and custom folders can be excluded individually. Additional settings let you adjust the maximum number of concurrent mailbox migrations and the maximum item size per transfer. Together, these controls make EdbMails a complete M365 Migration Tool for teams that need granular control without reaching for extra utilities.

Cost-effective Office 365 Migration Software

EdbMails makes Office 365 migration genuinely cost-effective — priced up to 50% lower than most competitors. Unlike other tools that charge based on your total number of users, you only pay for the mailboxes you actually migrate. And if you need to migrate the same mailbox more than once, one license covers you every time, which is a real plus when you're running delta migrations during a staged cutover. Any licenses you don't use won't go to waste either — they stay valid indefinitely and work across any client or domain whenever you need them next.

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24/7 Free Technical Support

EdbMails provides 24/7 free technical support. Thus, you are never left stuck at any stage of the migration. Our migration specialists are on hand to help you with the setup, or with resolving any unforeseen issues, or to jump on a remote session to get down to the bottom of the issues, with detailed hands-on. We can be reached at any given time through the live chat or the available numbers. Alternatively, if you want to work on the issues yourself, we have a well-elaborated knowledge base and detailed step-by-step guides to help you.

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Office 365 Migration Steps

Plan and prepare migration

Plan your migration by assessing infrastructure compatibility and choosing the right method. Define the data scope to move, archive, or delete for a successful Office 365 migration.

Migration prerequisites

Ensure network and bandwidth requirements are met, configure both source and target environments, create mailboxes, and assign licenses. Set up public folders and archive mailboxes.

Perform Office 365 migration

Perform the Office 365 migration with EdbMails by connecting to the source and destination, loading the mailboxes, reviewing the mailbox mapping, and starting the migration.

Post Office 365 migration activities

After completing the Microsoft 365 migration using EdbMails, verify reports, update MX records and Autodiscover, create new Outlook profiles, and ensure all users are operational.

Office 365 Migration Guide

Key features of EdbMails Office 365 migration tool

Incremental (Delta) migration

EdbMails uses an Incremental migration approach so eligible new or changed items can be processed in subsequent runs. This reduces repeated data transfer and helps lower network and server utilization. Incremental migration can be run multiple times as required, and migration reports can be reviewed for failed or skipped items before completing the migration.

Concurrent migration of multiple mailboxes

EdbMails uses advanced Concurrent mailbox migration to transfer multiple Office 365 mailboxes at the same time. This can help reduce migration windows for larger projects. Actual throughput depends on mailbox size, item count, system resources, network bandwidth, Microsoft 365 service conditions, and throttling.

Automatic Microsoft 365 mailbox creation

EdbMails Office 365 Migration Software Automatic mailbox creation and license assignment, so manual configuration is off the table. Each mailbox is set up on the target with the right user attributes — permissions, mailbox settings, and security configurations all included — using the source user’s data. That removes the risk of configuration errors and ensures every mailbox is fully prepared to receive data. This saves real time and speeds up the whole process in large migrations.

Auto mapping of Microsoft 365 mailboxes

EdbMails Automatic mailbox mapping during office 365 migration based on important attributes; display name, first name, last name, and the e-mail address. EdbMails can automatically map source and target mailboxes using the listed attributes, including for large mailbox sets. Administrators can review and modify the mappings where required before starting the migration, helping reduce setup effort for bulk migration projects.

Customized target folder selection

EdbMails Office 365 migration software lets you list and map target mailbox folders without much fuss. Map source folders to differently named target folders — ‘Old Emails’ to ‘Archived Mails’, for example — or handle different languages cleanly, like ‘Boîte de réception’ (French for Inbox) to ‘Inbox’. CSV mailbox/folder mapping is also supported, so you can pre-define mappings for bulk operations — particularly useful for customized and multilingual folder structures.

Migrate Office 365 emails, calendars, contacts

EdbMails Office 365 migration software handles every item type — emails, contacts, calendars, tasks, notes, and journals — to your target Office 365 server. The software performs a 1:1 migration, keeping the original mailbox structure intact with no data loss. Every email, calendar event, contact, task, and note transfers exactly as it appears in the source mailbox, with all attributes and metadata preserved. That keeps your Microsoft 365 environment organized end to end, with nothing left behind — from regular emails to critical calendar appointments and essential contacts.

Unlimited Public folder migration

EdbMails lets you migrate unlimited public folders from a domain — no PowerShell scripting needed. Emails, contacts, calendars, tasks, and other items transfer cleanly while the original folder structure (subfolders and mail-enabled folders included) is preserved. All public folder permissions migrate accurately to the target Microsoft 365. Complex public folder setups with nested permissions are handled correctly, so permissions and content arrive intact on the target.

Universal language compatibility

EdbMails supports multilingual Office 365 migration across source and target servers running different system languages. Whether your mailboxes contain standard characters or language-specific symbols, the migration process remains accurate and reliable from start to finish. Mailboxes and folders of any language migrate without any changes to the content structure or formatting, and all symbols and characters arrive at the destination exactly as they appear in the source mailbox.

Continuous service availability with zero downtime

EdbMails maintains continuous service availability with zero downtime throughout the entire Office 365 migration process and keeps your business running. Your business will continue receiving email and working as normal, without interruption, while the migration runs. It does not matter whether you are migrating all your data or just a few individual mailboxes, because email services are never suspended. Your users will be able to switch to the new Microsoft 365 tenant and carry on working once the migration finishes.

Detailed Office 365 migration report

EdbMails automatically generates a detailed Migration reports covering the entire migration. The report shows the number of mailboxes and folders selected, mailbox mapping details, and item counts per folder. That gives you what you need to track progress and verify completeness, ensuring everything has actually transferred to the new Microsoft 365 environment. Errors are highlighted with enough context to act on them when they happen. This helps keep the data accurate and find problems before the final cutover.

Microsoft 365 migration common scenarios

Migrate between Microsoft 365 tenants

EdbMails performs Office 365 Tenant-to-Tenant migration directly, without any loss of mailbox data, calendar data, contacts, tasks, or public folders, from one Microsoft 365 organization to another. Folder structure, item attributes, and various mailbox types, such as shared mailbox and archive mailbox, migrate successfully. This approach is generally applicable for a company merger, a company acquisition, or a department reorganization.

Migrate On-Premises Exchange to Office 365

Migrate Office 365 to an on-premises Exchange server

Organizations that need to move mailboxes from Microsoft 365 back to on-premises Exchange — whether for compliance, infrastructure consolidation, or a reversal of a previous migration — can do so directly with EdbMails. The Office 365 to Exchange Server migration supports all Exchange versions from 2010 through 2019, migrating mailboxes, public folders, archive mailboxes, and shared mailboxes with folder structure and permissions intact on arrival.

Migrate Small Business Server 2011

If you're still on Small Business Server 2011, you've probably noticed the strain — the hardware's aging, scaling anything is a headache, and the security gap keeps widening with each passing year. Office 365 sidesteps all of that. You get a cloud platform with proper security, room to grow, and collaboration tools your team will actually use. EdbMails moves mailboxes, public folders, and archive mailboxes from SBS 2011 to Office 365 directly — no intermediate hops, no hybrid setup, just a clean cutover to the cloud.

Hosted Exchange to Microsoft 365 migration

Migrate from hosted Exchange server

Hosted Exchange providers like Rackspace, GoDaddy, and Intermedia spare you the trouble of running your own mail server, which is great until you actually need to do something administrative. The restricted access is what pushes most teams toward Microsoft 365 — more control, more features, fewer support tickets just to make a basic change. EdbMails takes care of the move itself: mailboxes, calendars, contacts, and everything else from Hosted Exchange to Office 365, encrypted in transit and handled end to end.

Public folder to Shared mailbox migration

Public folder to Shared mailbox migration is one of those changes that pays off twice. The licensing math alone makes a strong case — shared mailboxes under 50 GB don't need a license, so the savings show up immediately on the next renewal. Beyond the cost angle, you also lose the public folder management overhead (anyone who's wrestled with permission inheritance there knows what I mean), and resources end up centralized in a way teams actually find usable.

Restore bulk PST files to Microsoft 365

Restoring bulk PST files to Office 365 is not an easy task, but EdbMails simplifies it completely from start to end. It migrates multiple files simultaneously. So you won't wait for one PST file to get over before moving on to the next, this will definitely saves huge time when transferring bulk data. It successfully handles large PST file smoothly without any issue and secure all throughout, so your IT team will have full confidence.

Office 365 Migration use case summary

Scenario	Relevant Capability
Mergers, acquisitions, or department reorganization	Tenant to Tenant migration
Reverting to on-premises Exchang	Office 365 to Exchange
Migrating from Small Business Server 2011	SBS 2011 to Office 365
Migrating from a hosted Exchange provider	Hosted Exchange to Office 365
Reducing public folder management overhead	Public folder to Shared mailbox migration
Restoring bulk PST files after an outage or offboarding	Bulk PST to Office 365
Switching to an IMAP-based platform	Office 365 to IMAP
Email-only migration, not full mailboxes	Office 365 to Gmail

What data gets migrated from Microsoft 365?

Mailbox migration

Every email, contact, calendar, task, note, and journal entry, with the original folder structure preserved exactly as it was.

Public folder migration

Subfolders, mail-enabled folders, items, and permissions — all of it carries over.

Archive mailbox migration

In-Place Archives migrate alongside the primary mailbox, or as their own job if you'd rather split them.

Shared mailbox migration

Full item migration with source-to-target auto-mapping handled for you.

Group mailbox migration

Microsoft 365 group mailboxes, moved either within a tenant or between tenants.

Resource mailbox migration

Room and equipment mailboxes, with booking configurations intact on the other side.

Supported item types for Office 365 Migration

Item	Status
Emails	Supported
Attachments	Supported
Folder hierarchy	Supported
Contacts	Supported
Calendars	Supported
Tasks	Supported
Notes / journals	Supported
Read / unread status	Supported
Message properties and metadata	Supported
Rules	Supported

Swift and Secure Office 365 Migration

Swift and secure Microsoft 365 Migration

Two things people usually have to trade off in a migration project — speed and security. EdbMails Office 365 Migration Software doesn't ask you to pick. Multi-threaded processing keeps the transfer rate up, the migration runs in the background with zero downtime, and your team carries on with their day uninterrupted.

On the security side: the metadata used for incremental delta comparison is encrypted with AES-256 and never leaves the machine you ran the migration on. The migration itself flows through Microsoft's own APIs, following the path Microsoft recommends. Your credentials? Never touch EdbMails servers — when it's time to sign in, you're handed off to Microsoft 365's actual sign-in page, where OAuth 2.0 and TLS handle authentication.

Know more

Microsoft Native vs. EdbMails M365 Migration Tool

Evaluation Factor	Microsoft Native	EdbMails
GUI workflow	Exchange admin center wizard; PowerShell required for advanced or bulk scenarios	Product workflow, no PowerShell
Automated mapping	Limited; typically requires existing mailbox/user provisioning rather than attribute-based auto-mapping	Supported
Bulk migration	Supported via migration batches	Supported
Incremental migration	Scenario-dependent	Supported
Filtering	Basic; more limited than granular third-party filters	Advanced filters (date, folder, sender, recipient, subject, attachment name, read/unread)
Detailed reporting	Migration dashboard and per-user migration status reports available	Detailed migration reports
Cross-tenant migration	Supported, with prerequisites	Supported
Dedicated support	Microsoft support model	EdbMails technical support

Migration Challenges and the EdbMails Approach

Challenge	EdbMails Approach
Large mailbox counts and volumes	Parallel mailbox processing with automated mapping
Microsoft 365 throttling limits	Automatic throttling handling and retry
Source environment must stay active during migration	Incremental migration and staged cutover
Verifying migration completeness	Item-level reporting and validation

Office 365 Migration: Frequently Asked Questions

What is Office 365 migration?
Office 365 migration is the process of moving mailbox data, public folders, and archive mailboxes out of Microsoft 365 to another Microsoft 365 tenant, on-premises Exchange Server, PST files, or an IMAP server. EdbMails Office 365 Migration Software supports all of these scenarios.
Learn more about Office 365 migration
What is an Office 365 mailbox migration tool?
An Office 365 mailbox migration tool moves mailbox content, including emails, attachments, folders, contacts, and calendars, into Microsoft 365.
Is EdbMails also an Office 365 email migration tool, not just a mailbox migration tool?
Yes. As an Office 365 email migration tool and Microsoft 365 email migration tool, EdbMails covers full mailbox migration (email, calendar, contacts, tasks, and more) as well as email-only scenarios such as Office 365 to IMAP and Office 365 to Gmail. Office 365 is the source migrating to Exchange, IMAP, and Gmail, and Bulk PST files can be imported into Office 365. The same Office 365 Mailbox Migration Tool and Microsoft 365 Mailbox Migration Tool handle each of these scenarios. SharePoint, OneDrive, and Microsoft Teams (including chats and channels) migrate under a separate license category.
How can I migrate to Office 365 using EdbMails?
The whole Office 365 migration process using the EdbMails Office 365 Migration Software is one of the simplest there is – just connect to your source and target servers and let it do its work.
Step 1: Download and install EdbMails.
Step 2: Connect to the source using a global administrator account.
Step 3: Choose which mailboxes and folders to migrate.
Step 4: Connect to the destination server and map the mailboxes.
Step 5: Begin the Office 365 migration process.
Click here for the detailed Office 365 to Office 365 Migration Guide
What are the reasons for migrating to Office 365?
Most teams move to Office 365 for some combination of these:
Cost savings: Less spent on on-premise hardware, fewer painful upgrade cycles, and ongoing maintenance becomes someone else's problem.
Scalability: Size your environment up or down as the business shifts
Accessibility: Mailboxes, documents, and apps reachable from anywhere, on whatever device the user happens to have.
Collaboration: SharePoint, Teams, OneDrive, and Yammer working together for actual teamwork instead of email tag.
Security: Built-in threat protection, data loss prevention, and encryption — without needing to bolt on third-party tools.
Maintenance: Microsoft handles updates and patches, which frees IT staff for work that actually moves the business.
Compliance: Features that help with HIPAA, GDPR, and the rest of the alphabet soup.
What types of Microsoft 365 migration does EdbMails support?
EdbMails supports all the standard Office 365 migration types — cutover, staged, hybrid, and IMAP — covering small single-pass switchovers, phased moves for larger orgs, on-premises/cloud coexistence, and email-only sources like Gmail. Each method has different requirements and size limits, so for a full comparison of how they work and which one fits your environment, see our guide to the Office 365 migration methods.
What are the best practices for Office 365 email migration?
The best practices guide for Office 365 mailbox migration is here.
What are the migration challenges with Microsoft 365?
See Office 365 Migration Challenges.
Can I use EdbMails to migrate Microsoft 365 to On-Premise Exchange server?
Yes. EdbMails moves Office 365 mailbox data back to on-premise Exchange, with all server versions supported — Exchange 2010, 2013, 2016, and 2019. Step-by-step guidance for migrating from Office 365 to on-premise Exchange is available separately.
What are the steps to migrate Office 365 Public folder with EdbMails?
Public folder migration is straightforward with EdbMails — and there's no PowerShell scripting involved at any point.
Step 1: Launch EdbMails and choose Office 365 migration.
Step 2: Pick 'Connect to Public folder' as the migration operation.
Step 3: Connect to the source Office 365 server and select the public folders.
Step 4: Connect to the target Office 365 server and start the migration.
The full procedure is documented under Public folder migration to Office 365.
Can I migrate a Microsoft 365 Public folder to Shared mailbox with EdbMails?
Yes - Office 365 public folder to shared mailbox migration is one of the supported scenarios.
How to migrate a large Archive mailbox to Office 365 with EdbMails?
For migrating a large archive mailbox to Office 365:
Step 1: Enable In-Place Archive in your Office 365 tenant.
Step 2: Download and install EdbMails.
Step 3: Connect to the source Office 365 server.
Step 4: Pick the large archive mailbox you want to move.
Step 5: Connect to the target Office 365 server.
Step 6: Start the migration.
Every piece of mailbox data — emails, contacts, calendars, tasks, attachments — comes across with full accuracy. No data loss, no corruption, nothing scrambled.
Which license do I need to buy to migrate Office 365 Mailboxes?
You'll need an Office 365 Migration license to move your mailboxes from Office 365.
Can I migrate only new emails using EdbMails without duplicates on the target server?
Yes. By default, the first run is a full migration. From the second run onward, incremental migration kicks in automatically, picking up only new or modified items — no duplicates land on the target. You can also filter by last migration date if you'd rather skip rescanning the whole mailbox each time.
Do I need to pay for Shared mailbox migration?
Yes — each shared mailbox uses up one license, same as a regular mailbox.
Is there a Free Trial version available to test Microsoft 365 migration features?
Yes — there's a Free Trial that opens up every Office 365 migration feature for testing. Up to 30 items per folder from every mailbox come across during the trial. Click here to grab it.
Is it possible to migrate specific data from source Office 365 to target Office 365?
Definitely. EdbMails handles selective Office 365 migration through filters that you can shape pretty granularly — message received date, sender address, recipients (CC and BCC included), subject line, attachment names, and read/unread status all work as filter criteria. Click here for the filter setup.
How do I choose the best Office 365 migration software?
Compare migration tools across capabilities like license type, concurrent mailbox migration, automatic throttling management, incremental migration, public folder licensing, and technical support. Tools that offer lifetime licenses, free upgrades, and 24/7 support typically deliver better long-term value than subscription-based options. For a detailed evaluation framework and feature comparison, refer to our Office 365 Migration Tools Comparison page.
Does EdbMails manage mailbox mapping from source to target Microsoft 365 server automatically?
Yes, EdbMails automates the mailbox mapping between source and target tenants. For the case when there are hundred or thousands of mailboxes to be migrated, manual mapping would be a terrible job and EdbMails saves a lot of time.

Why do most Office 365 migration projects fail?
Office 365 migration projects rarely fail because of tooling. The failure patterns that come up consistently across projects are:
1. Incomplete pre-migration assessment: Skipping the infrastructure audit means SMTP relay dependencies, legacy add-ins, and distribution group attributes only surface after cutover — when fixing them is expensive.
2. Mismatched migration type: Running a cutover migration against an environment with 800 mailboxes, or a staged migration against Exchange 2013, creates problems that no tooling can fully compensate for.
3. Poor coordination between IT and business units: Cutover windows that land during quarter-end close, board meetings, or regulated reporting cycles create outage incidents that overshadow a technically clean migration.
4. Inadequate end-user communication: Users who receive no notice before cutover generate a support backlog in the first 48 hours that can take weeks to clear.
EdbMails eliminates the tooling risk — automatic mailbox mapping, incremental migration, throttling management, and zero duplicates are built in.
How does EdbMails secure data during Office 365 migration?
Authentication uses Microsoft Graph APIs with OAuth 2.0 (MSAL); sign-in happens on Microsoft's own page and credentials are never stored on EdbMails servers. Data in transit uses TLS 1.2; there are no unencrypted migration paths. Local metadata used for incremental delta comparison is encrypted with AES-256 and never leaves the migration machine. EdbMails works with Multi-Factor Authentication and Conditional Access policies already configured in the tenant, and holds ISO/IEC 27001 certification and GDPR-compliant data handling practices. See the migration challenges and solutions guide for the full list of controls to validate before cutover.
How does the licensing work?
The licensing model is per-mailbox: each migrated mailbox consumes one license, calculated against the source mailbox count. Nothing stops you from running multiple migration jobs in parallel across different machines, as long as you've got licenses left in the pool. Click here to check your purchased licenses and how many mailboxes you've already migrated.
Do you have Office 365 Migration checklists?
Yes - Click here for the Office 365 migration checklists.
How many licenses should I purchase for Public folder migration?
Public folder migration takes 50 mailbox licenses. Once those are allocated, you can migrate unlimited public folders from a domain — there's no per-folder cost beyond that.
Does EdbMails support migrating Shared mailboxes to Office 365?
Yes — shared mailbox migration to Office 365 tenants is fully supported. The full set of source items is covered: mailboxes, shared mailboxes, public folders, archive mailboxes, and more. EdbMails handles the shared-mailbox mapping automatically and brings across the contents — emails, attachments, contacts, calendars, tasks, and notes.
Is there any size limitation for Microsoft 365 mailbox migration?
There aren't any size limits on the EdbMails side. Microsoft does enforce its own restrictions, though — those are detailed in this Knowledge Base article.
Does EdbMails create the mailboxes automatically on the target O365 server?
Yes, EdbMails will automatically create the mailboxes for you on the target and allocate the licenses to be assigned.
Is it possible to map one source folder to the target folder of my choice on the server?
Yes, EdbMails allows customized folder mapping to route source folders to target folders of your choice.
How much time does it usually require to migrate Office 365 mailboxes?
Click here for the breakdown of Office 365 migration duration — it depends on a few moving parts.
Does the software support all languages during migration?
Yes — EdbMails supports all languages during Office 365 migration.
Can I access the source and target mailbox during migration?
Yes — mailbox access remains available throughout the migration. No server downtime to plan around.
Can EdbMails remove deleted source items from the target Office 365 folders?
Yes — EdbMails can sync deletions from source to target. Tick the 'Remove deleted source items from target folders' option in the main migration window, then run a follow-up migration. There's more on the additional mailbox migration options for Office 365 if you want to dig in.
Can I migrate emails from Microsoft 365 to IMAP server using EdbMails?
Yes — Office 365 emails can move to any IMAP-enabled server. The supported list covers most of the popular ones: Outlook, Gmail, Zoho, Zimbra, IceWarp, cPanel, Plesk, GoDaddy, Rackspace, AWS WorkMail, Bluehost, and Dreamhost. Click here for the full procedure.
Does EdbMails support Office 365 to Hosted Exchange migration?
Yes — Office 365 to Hosted Exchange is supported. A common example is migrating from Office 365 to a Rackspace-hosted Exchange server. The GoDaddy to Office 365 and Rackspace to Office 365 guides are also worth a look if those are part of your scenario.
Will I require a different license for Primary mailbox migration and Archive mailbox migration?
No, you only need one license if both the UPN (User Principal Name) are identical for the Primary and Archive mailboxes.
Does the software generate duplicates when running consecutive Microsoft 365 migrations?
No — incremental migration handles this. Subsequent runs only carry across new and modified items, which keep the target server clean of duplicates.
Does EdbMails handle mailbox mapping between source and target Microsoft 365 servers automatically?
EdbMails automates mailbox mapping between the source and target Tenants, which is useful for large-scale migrations, saving considerable time and effort compared to manual mapping.
Does EdbMails need scripting via PowerShell for Office 365 migration?
No. EdbMails Office 365 migration is an all-graphical-user-interface experience without need of using any PowerShell scripts, or any command-line instruments, or making any API calls. This is regardless of whether it is about migrating mailboxes across tenants, public folders or mailbox archives, hybrid configuration.