Migrating mail from Gmail to Office365

If you’re moving just one individual mail account from Gmail to Outlook online (part of Microsoft Office365) then using connected accounts should work but personally I could not get Outlook online to connect to my Gmail account.

It has been suggested that this was because I didn’t have two-factor authentication turned on at Gmail and therefore wasn’t using an application-specific password for the connection from Outlook. Not sure if this is correct or not.

After a number of dead ends, I found these instructions from migrating from Gmail to Office365 and although they involve more steps than just setting up a connected account, they did work seamlessly.  The only caveat is that you need an Outlook client to make the magic happen.

Good luck!