EdbMails EDB Recovery and Migration software
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Migrate IMAP to Office 365

Steps to migrate emails from IMAP server to Office 365

IMAP to Office 365 Migration

Just $200 For 100 Mailboxes

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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
  • 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
    • Mimecast Archive to Office 365 migration
    • HostMonster to Office 365 migration
    • SiteGround to Office 365 migration
    • Fastmail to Office 365 migration
    • SmarterMail to Office 365 migration
    • MDaemon to Office 365 migration
    • Zimbra to Gmail migration
    • Rackspace to Gmail migration
    • Zoho to Gmail migration
    • Rackspace to AWS migration
  • Set Office 365 Impersonation rights
    • Using PowerShell commands
    • Using Office 365 GUI
  • 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 IMAP migration software. It can migrate emails, messages, folders, mailboxes from any IMAP enabled server to another server. EdbMails supports more than 20+ IMAP 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 perform IMAP to Office 365 migration 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 migrate IMAP to Office 365 in a few clicks.

Migrate IMAP to Office 365

QUICK LINKS

GoDaddy-Hosted Office 365 to Microsoft O365Import Gmail to Office 365Migrate Email from Zoho to Office 365Migrate Email From cPanel to Office 365Rackspace to Microsoft 365How to Import Amazon WorkMail to Office 365 Zimbra to Office 365 Migration Tool

IMAP to Office 365 migration plan

Planning is one of the most important steps before you begin migrating your IMAP 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

I. IMAP to Office 365 pre migration activities

On the source IMAP server:

  1. Take a complete backup of all your users data, configuration and messages
  2. If you plan to migrate multiple users without the administrator login, prepare a CSV file with the list of all user mailboxes.
  3. 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 permission
  6. Ensure that the admin account on the target Office 365 server has the Applicationimpersonation 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.

II. How to migrate emails from IMAP to Office 365?

  • Step 1: Download and install EdbMails IMAP to Office 365 migration software
    • Download EdbMails and install the application on the source Exchange server or any other computer. You can also perform the migration operation by installing EdbMails on a non-Exchange server computer.
    • Launch the application and click ‘Login’ or ‘Start Your Free Trial’.
    • Select the migration method as IMAP migration

     See list of EdbMails system requirements for IMAP migration.

    Note: If the Standard folders (such as Inbox, Calendar, Contacts) on your source Exchange server mailboxes are initialized with a different language, follow the below details to migrate these folders to the respective system folders on the target (destination) server.

    For Instance: If your source Inbox folder is named 'Boîte de réception', which is in French language and you migrate this folder directly to the destination server, then by default it will not be mapped to the 'Inbox' folder on the target server. In order to map the folder with the french name to the respective folder, change the regional settings on the target server to match 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

  • Step 2: Connect to a single or multiple users on the IMAP server

    Select ‘IMAP Migration’ from EdbMails main interface. Select the Host Name from the list. You can also enter the host name of the IMAP server manually. Enter the Post Number: 993, and SSL/TLS as shown in the connection window.

    Connnect to IceWarp single user mailbox

    If you want to migrate multiple mailboxes, select ‘Multiple (bulk) Users/Accounts Migration’. Download the sample CSV file and add in the required details such as mailbox name, password, host name and port. Load the CSV file into EdbMails and verify the list mailboxes to continue.

    Connect to multiple IMAP mailboxes

     See steps to connect to single and multiple users in EdbMails IMAP migration

  • Step 3: Select mailboxes from the IMAP server and connect to Office 365
    • Select the mailboxes and folders from the left panel.
    • Click ‘Migrate to Office 365’ to set up the connection with the target server.

       See tips to optimize IMAP migration to Exchange online

      Migrate Selected Mailboxes

     Tip: If this is the first time you’re migrating with EdbMails, the migration is a full migration. On subsequent migrations from the same source to the target, the migration is incremental.

    EdbMails provides the following additional options to help you perform staged Office 365 migration based on a Date and other conditions.

    • Additional Include and Exclude Filter Options and migration settings for mailboxes.
    • Filter emails by Date: Migrate to Office 365 by applying the Date filter
    • Filter emails by Size: Exclude emails from migration larger than a specified size.
  • Step 4: Connect to target Office 365 as Global Admin User

    Connect to the target server by selecting Auto or Manual registration for modern authentication and the connection method as Mailboxes, Public folder or Archive mailbox. You can also connect to the mailboxes by loading a CSV file of users from the Office 365 tenant.

  • Step 5: Map the mailboxes between the source and the target

    The mapping activity in EdbMails can automatically match and map the mailboxes and folders between the Office 365 tenants. This activity saves time when you’re migrating a large number of mailboxes.

  • Step 6: Migrate IMAP to Office 365

    After the mailbox mapping, start the migration operation. Finally, verify the migration and the count of folders, mailboxes and items with the EdbMails text-based log report.

III. 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.

IV. 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 migrate emails from IMAP to Office 365.

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