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IMAP migration -  Yahoo (free) accounts to Microsoft 365 fails!

Are you trying to migrate IMAP Yahoo accounts to 365 and get errors ? Like incorrect username or password ? Follow these steps : 

If you are trying to create the migration endpoint for IMAP migrations to your Microsoft 365 tenant remember to use the settings below : 

MigrationEndpoint Settings IMAP server
  • Next you will need to create your 365 users
  • Assign a license to the users
  • And finally prepare the CSV file  

About the CSV file be careful with the columns : 

Email address: column is your destination 365 mailbox email address.

Username: is your Yahoo account username without @ sign or anything else.

Password:Is your account's app password  .

CSV details

If you try to use your password instead you will get multiple errors . Go ahead and create an app password on this link  : AppPasswordsCreation

After creating the app password write it down in your CSV file in Password column and Start your migration batch.