EdbMails EDB Recovery and Migration software
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    • Exchange Server MigrationMigrate Exchange 2007, 2010, 2013, 2016, 2019 to Office 365 tenants. Also, migrate between Exchange servers and PST
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    Migrate IMAP to Office 365 (Microsoft 365)

    Steps to migrate IMAP mailboxes to Office 365

User Manual

  • Overview
  • System Requirements
  • Installation
    • Installation process
    • Reinstall or Upgrade
    • How to uninstall
  • Initial Setup
  • FAQ
    • IMAP Migration to Office 365
    • IMAP Migration to Exchange
    • Gmail Backup and Migration
  • Videos
    • IMAP to Office 365 Migration
    • IMAP to Exchange Migration
    • Gmail Backup and Migration
    • IMAP Migration to PST
    • IMAP Migration to IMAP
  • Screenshots
    • IMAP Migration to Office 365
    • IMAP Migration to Exchange
    • Gmail Backup and Migration
    • IMAP Migration to PST
  • How it works?
    • IMAP Migration to Office 365
    • IMAP Migration to Exchange
    • Gmail Migration
    • IMAP Migration to PST
    • IMAP Migration to IMAP
    • Outlook PST to IMAP
    • cPanel to cPanel Migration
  • Connect to IMAP
    • Connect IMAP Single Server
    • Connect IMAP Multiple Server
  • Enable less secure apps in Gmail
  • Export Gmail contacts and calendars
    • Export Gmail contacts to Office 365
    • Export Gmail Calendars to Office 365
  • Connect to Office 365
    • Modern Authentication Using OAuth 2.0
      • Microsoft 365 modern authentication
      • Automatic Registration
      • Manual Registration
    • Connect with Global Admin
    • Connect to Office 365 with full access permission
    • Connect to Office 365 with CSV file option
    • Connect to Office 365 as single user mailbox
  • Connect to Exchange server for multiple mailboxes migration
    • Connect with Global Admin
    • Connect to Multiple user using CSV file
    • Connect using full access permission
    • Connect individual users for Single / Specific user Migration
  • Connect to Hosted Exchange for its Migration
    • Connect with Full Access permissions
    • Using multiple user credentials with CSV file
    • Connecting to Individual user for its migration
  • Set Office 365 Impersonation rights
    • Using PowerShell commands
    • Using Office 365 GUI
  • Knowledge Base
    • IceWarp to Office 365 migration
    • Zimbra to Office 365 migration
    • AOL Emails to Office 365 migration
    • Zoho Mail to Office 365 migration
    • GoDaddy to Microsoft 365 migration
    • ProtonMail to Office 365 migration
    • cPanel to Office 365 migration
    • Rackspace to Office 365 migration
    • Plesk to Office 365 migration
    • Barracuda to Office 365 migration
    • AWS Workmail to Office 365 migration
    • 123 Reg to Office 365 migration
    • Bluehost to Office 365 migration
    • Dovecot to Office 365 migration
    • hMailServer to Office 365 migration
    • BigRock to Office 365 migration
    • Liquid web to Office 365 migration
    • Dreamhost to Office 365 migration
    • Comcast to Office 365 migration
    • Google Vault to Office 365 migration
    • Enterprise Vault to Office 365 migration
  • Set Exchange Server Impersonation rights
    • Exchange 2007 and below
    • Exchange 2010, 2013, 2016 and 2019
    • Set using Exchange Server GUI
  • Incremental Migration
  • Exchange Throttling Policy
  • Map the Mailboxes
  • Multifactor Authentication
    • Enable MFA in Office 365
    • Create App password for MFA
    • Disable Security Defaults

EdbMails software for IMAP migration

EdbMails is a Microsoft partnered IMAP to Office 365 migration software. It can migrate emails, messages, folders, mailboxes from any IMAP enabled server to Microsoft 365. It supports more than 20+ email servers such as Hotmail, Outlook, Gmail, Google Workspace, Office 365, Microsoft Exchange, Zoho, Zimbra, IceWarp, cPanel, Plesk, GoDaddy, Rackspace, Google Vault and Enterprise Vault, AWS Workmail, Bluehost, Dreamhost and many others. You can also migrate mailboxes to another IMAP server or export your emails to Outlook PST. The advantage of the application is that it performs incremental migration and supports subsequent migrations to the target server without creating duplicates. With its advanced folder and email filter option, you can customize the migration to include or exclude the emails based on your needs. Furthermore, EdbMails is a graphical interface application that helps you complete the migration in a few clicks.

IMAP to Office 365 migration plan

Planning is one of the most important steps before you begin migrating your data to Office 365. Prepare the target environment and have a backup plan in place to avoid potential risks and data loss. Here is a brief checklist of points to consider before you migrate.

  1. Take a complete backup of all the mailboxes, folders, calendars, contacts on the source server.
  2. Remove unused mailboxes, mail items and duplicate files from the source.
  3. Make an inventory of items before you make the move. These should include but are not limited to the following items.
    • User accounts, email addresses and login credentials
    • The source and target details, browser and operating systems used
    • Network settings, DNS configurations, MX records, firewall settings
    • Outlook settings and version you are using in your organization.
    • Licensing plans on your current source server
    • Active Directory configuration and other dependencies associated with it.
    • List of data and permissions from the source server that you want to transfer.
  4. Determine the size of the data and number of mailboxes you want to migrate.
    • Decide if you want to migrate everything at once (cutover migration) or plan to migrate your data in stages (staged migration).
    • Decide if you plan to migrate to Office 365 Public folders, In-Place Archive, and Shared mailboxes along with the primary mailboxes.
    • Based on the preceding factors, estimate the approximate time that may take for the migration.
  5. Create appropriate user mailboxes on Office 365 and assign licenses to them.
  6. Ensure you have enough network capacity and bandwidth to migrate.
  7. Consider the throttling and message size limits on Office 365.
  8. Communicate the migration plan and changes to your end users and stakeholders.
  9. Perform a test migration before you start the actual one.
  10. Start the actual migration, verify the endpoints and update the MX records.
  11. Check for correct mail flow and configure Outlook for all the users.
  12. Plan for decommissioning unused apps and their settings post migration

Pre migration activities IMAP to Office 365 migration

On the source IMAP server

  1. Ensure you have global administrator rights to migrate mailboxes from the source server. Assign the impersonation rights to the global admin to migrate mailboxes on behalf of users in your organization.
  2. Take a complete backup of all your users data, configuration and messages
  3. If you plan to migrate multiple users without the administrator login, prepare a CSV file with the list of all user mailboxes.
  4. Find your IMAP server name and related connection settings.

On Office 365 :

  1. Prepare your target Office 365 tenant. See tenant roadmap for Microsoft 365.
  2. Assign the Organization Management role group in Exchange online to the admin user.This is an elevated role required to migrate Public folders.
  3. Purchase a suitable Office 365 licensing plan. You can also sign up for a 30 day free trial and decide to go with a suitable one later. Compare Office 365 business plans and Compare Office 365 enterprise plans
  4. Before migrating from IMAP server to Office 365, ensure that you create mailboxes for your users in your organization and assign suitable licenses to them.
    •  Add users and assign licenses to Office 365 users
    •  Add several users at the same time to Office 365
    •  Assign Microsoft 365 licenses to user accounts
  5. If you plan to migrate to Public folders and Shared mailboxes on Office 365, ensure that you create and configure them on the target server.

     Create Office 365 Public folder and assign mailbox user

     Create Shared mailboxes on Office 365 and set the correct permissions

  6. Ensure that the admin account on the target Office 365 server has the Application impersonation rights to migrate mailboxes and Public folders.
  7. Check if the Global admin account with the management roles has a valid and non-hidden mailbox on the source and target server.
  8. If you have a custom email domain to which you want to receive emails after the migration, you must add and verify the domain on Office 365.

     Steps to add a custom domain to Office 365 and steps to add DNS records to connect your domain.

  9. Ensure that you meet the network and bandwidth requirements for the migration. See network and migration planning, performance factors and best practices for Office 365 migration.
  10. Configure Office 365 to send and receive large messages.

     Follow the steps to increase the message size on Office 365 to 150MB. See message size limits on Office 365 for more information.

How to migrate emails from IMAP server to Office 365?

  1. Note: Steps to migrate the Standard folders which are initialized with different language

    If Standard folders (such as Inbox, Calendar, Contact etc.,) on your source IMAP server mailboxes are initialized with different language. Follow the below details to migrate these folders to the respective system folders on target (destination) server.

    For Instance: Your source Inbox folder is named 'Boîte de réception', which is in French language. If you migrate this folder directly to the destination server then by default it will not get mapped to the 'Inbox' folder on target server. In order to map this to the respective folder, change the regional settings on target server to that of your source mailbox folder language (in this case, it is French).

    Click here to know the steps to change the language and regional settings on Office 365 server

  1. Step-1. Download and Install the EdbMails application

    a. Download and install EdbMails on your computer.   Download

    b. Double click the EdbMails setup (EdbMailsSetup.exe) to install the application.

    c. Follow the instructions that appear to complete the installation.

    installation

  2. Step-2. 'Login' or 'Start Your Free Trial' to access the application

    Click the 'Login' or 'Start Your Free Trial' button.

    Demo login EdbMails

  3. Step-3. Select 'IMAP Migration'

    Select the option 'IMAP, POP3 Email Migration' and click the 'Continue'.

    IMAP Migration

  4. Step-4. Connect to Source IMAP Server

    Login to Source IMAP Server

    Click here for the detailed steps on IMAP server login using EdbMails

    On successful login, you will be displayed with the mailbox(es).

  5. Step-5. Perform IMAP to Office 365 Migration

    Select the mailbox(es) for migration

    Select the mailbox(es) that you wish to migrate.

    Select Mailboxes

    Click the 'Migrate to Office 365' button to continue.

    Migrate Selected Mailboxes

    Login to Destination Office 365

    Login to the target Office 365 account. Click here for the detailed steps on Office 365 login using EdbMails

    On successful login, you will be displayed with the list of mailboxes.

    Load Mailboxes from CSV

    After successful login, if the automatic mailbox listing has failed to retrieve all the mailboxes name then you can load all the mailboxes name using .csv file. However, if the listing is successful then you can ignore this step and continue to next step.

    Click here for the detailed steps on listing mailboxes using '.CSV' file

    Click the 'Continue' button.

    Load CSV

    Map Source and Target Mailboxes

    Map the source mailboxes to target Office 365 mailboxes. Click here for the details.

    Start the Migration Operation

    Click the 'Continue' button to start the migration operation.

    mailbox mapping

    That's it! During migration operation, you can view the progress as shown below.

    IMAP to Office 365 Migration

    Appropriate message will be displayed on completion of the migration operation.

    Click the 'View Log' button to view the migration operation log.

    Login to your Office 365 account to verify migrated items.

 

Post-migration tasks

Step 1: Update DNS records (MX record) to point to Office 365
If you have not done this step previously, change the DNS records known as MX records to enable and receive email messages on the target Office 365 server. In addition to this setup, configure the Autodiscover record to allow Outlook to connect to the migrated mailboxes.

Step 2: Create a new Outlook profile for users in the new domain
Remove any previous instances of the email account you may have on Outlook to avoid conflicts with Office 365. Configure and recreate the Outlook profile for each user in your domain after you complete the migration.

Migration troubleshooting

 See the migration troubleshooting guide for possible solutions related to common errors. For more information on EdbMails IMAP migration, see frequently asked questions (FAQs)

Benefits of EdbMails for IMAP to Office 365 migration

  1. The application makes it simple to connect to the source and target servers directly and perform the migration.
  2. With EdbMails you can migrate to Office 365 Public folders, Shared mailboxes and In-Place Archive.
  3. Include and exclude filters enable you to selectively migrate emails based on Date, Subject, Attachment, Sender.
  4. Folder options enable you to exclude mail folders such as Junk, Inbox, Drafts, Conversation History.
  5. EdbMails is a highly secure tool and maintains a perfect data consistency between the source and target.
  6. Supports migrations from/migrations to all IMAP enabled email servers.
  7. The application is compatible with Windows 11, 10, 8.1, 8, 7 and all Windows server versions.
  8. Free trial and free 24x7 customer support to help you with the migration.

 If you require further assistance, contact EdbMails 24x7 support. Try the free trial version today to start the migration!

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EdbMails Demo / Trial Version

Step 1. Download and install EdbMails

Step 2. Click the 'Start Your Free Trial' button

Demo login EdbMails

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