Re: move an office 365 email account to its own single user account

Hi,

There is no included migration tool for migration from one Office 365 to Another.

My advice is that you do a PST-export in Outlook for the entire mailbox in your clients account. Then configure Outlook to your personal Office 365 account and then import the entire content of the PST-file to that mailbox - migration done.

You can use this article as reference: support.microsoft.com/.../287070

Hope this helps.