How to migrate from IMAP to Office 365?

Migrate IMAP to Office 365 (Microsoft 365)

Steps to migrate IMAP mailboxes to Office 365

IMAP Migration to Office 365 Step by Step Guide

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

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.
Step-2. 'Login' or 'Start Your Free Trial' to access the application
Click the 'Login' or 'Start Your Free Trial' button.
Step-3. Select 'IMAP Migration'
Select the option 'IMAP, POP3 Email Migration' and click the 'Continue'.
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).
Step-5. Perform IMAP to Office 365 Migration
Select the mailbox(es) for migration
Select the mailbox(es) that you wish to migrate.
Click the 'Migrate to Office 365' button to continue.
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.
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.
That's it! During migration operation, you can view the progress as shown below.

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.