Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello
Microsoft doesn't allow merging accounts, but I think we can work out some migration within what's technically possible.
Before I go into the specific, Regarding account B, the email address you use to sign into it, is it an outlook.com address, or a third party email address ? Please let me know as that affects whether you can bring the email address to account A.