What is Office 365 migration?

Office 365 migration is the process of moving organizational data — mailboxes, public folders, archives, SharePoint, OneDrive, and Teams — into Microsoft 365, out to another platform, or between two tenants. EdbMails Office 365 Migration Software supports all of these scenarios.

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.

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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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Migrate Mailboxes from Google, Zimbra, and Other Platforms to Office 365

Organizations moving to Microsoft 365 from platforms such as Google Workspace, Zimbra, Zoho Mail, Rackspace, cPanel, Plesk, and other IMAP-based servers need to consider differences in authentication methods, folder structures, and mailbox formats. EdbMails Office 365 Migration Software helps administrators migrate supported mailbox data while providing options for mailbox mapping, incremental migration, filtering, and migration reports. The migration process can be planned according to the source environment and destination requirements, helping teams validate migrated data before completing the transition.

Email migration to Office 365 from multiple platforms

Migrate Google Workspace to Office 365

EdbMails transfers emails, calendars, and contacts accurately from Google Workspace to Office 365. The migration runs over a secure, direct connection between the two platforms and supports incremental (delta) syncing, so later migration runs can process new or changed items through incremental migration.

See the full Google Workspace to Office 365 migration guide.

Zimbra to Office 365 Migration

EdbMails preserves folder structure, metadata, and attachments when moving mailboxes from Zimbra to Office 365, while reducing the impact during the migration process. On the Zimbra side, each user's individual email and password are required to access their mailbox, while on the Office 365 side, a single admin account is enough to migrate into all target mailboxes - making bulk migration practical for admins moving an entire organization at once.

See the full Zimbra to Office 365 migration guide.

Migrate from Rackspace to Office 365

EdbMails handles the data complexity of moving from Rackspace to Office 365, helping administrators plan and manage the transition. A pre-migration analysis helps estimate mailbox size and migration time upfront, so admins can plan the cutover with fewer surprises.

See the full Rackspace to Office 365 migration guide.

cPanel to Office 365 Migration

EdbMails replaces the manual reconfiguration and PST imports cPanel migrations usually require with a simple, complete transfer. It connects directly over IMAP, so mailboxes hosted through cPanel-based webmail clients move across without needing local exports first.

See the full cPanel to Office 365 migration guide.

Plesk to Office 365 Migration

EdbMails migrates Plesk email data directly to Office 365, preserving supported folder structures and mailbox information based on the migration configuration. Read/unread status and message flags carry over as well, so the mailbox looks and behaves the same for end users after the move.

See the full Plesk to Office 365 migration guide.

IceWarp to Office 365 Migration

EdbMails handles IceWarp to Office 365 migration with accurate data transfer and security maintained throughout. Emails and tasks are all included, so admins don't need separate tools to move different mailbox item types.

See the full IceWarp to Office 365 migration guide.

Zoho Mail to Office 365 Migration

EdbMails transfers Zoho Mail data securely to Office 365, keeping folder structures intact while using incremental migration options for repeat migration runs. The connection uses Zoho Mail's IMAP access, and delta migration lets admins run a final sync closer to cutover without re-copying everything already moved.

See the full Zoho Mail to Office 365 migration guide.

Bluehost to Office 365 Migration

EdbMails handles Bluehost to Office 365 migration with automatic throttling management, keeping every attachment and folder intact. This is especially useful on shared hosting plans like Bluehost's, where server-side rate limits can otherwise interrupt large transfers.

See the full Bluehost to Office 365 migration guide.

AOL to Office 365 Migration

EdbMails migrates AOL mailboxes to Office 365 via IMAP with automatic mapping, selective filtering, and full audit logs. Folder- and date-range filters let admins migrate only what's needed, rather than every message in the account.

See the full AOL to Office 365 migration guide.

ProtonMail to Office 365 Migration

EdbMails moves ProtonMail data to Office 365 via IMAP, with delta migration to avoid duplicates on repeat runs. ProtonMail's labels are mapped to Outlook folders during the transfer, so the existing organization structure isn't lost in the move.

See the full ProtonMail to Office 365 migration guide.

Common Challenges When Migrating to Microsoft 365

Different authentication methods between source platforms
Mailbox and folder structure differences
Large mailbox processing requirements
Planning repeat migration runs before final cutover
Validating migrated mailbox data after completion

How the Migration Process Works

A typical migration workflow includes preparing the source environment, configuring Microsoft 365 access, mapping source and target mailboxes, running the migration, and reviewing reports after completion.

Connect to the source email platform.
Configure Microsoft 365 destination settings.
Map source mailboxes with target accounts.
Run the migration and monitor progress.
Perform validation and use incremental migration when required.

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