I just signed a new user up to Office 365 Home with their existing custom domain email address which uses another host.
The sign up page for Office 365 Home states:
Premium Outlook.com experience
Enjoy advanced protection against phishing and malware for up to 5 Outlook.com accounts, plus no ads and a 50 GB mailbox.
I then went to Outlook.com and was signed in with the same email address went into settings and "Manage or choose a primary alias" there is a drop down where the custom domain is already listed.
If I change the MX records on the domain, will this now be picked up in Outlook.com?
It's now July 2018 and Outlook Premium which supported custom domains has come and gone but has this method of adding a custom domain slipped through the net ... for new customers only?
Not sure I want to change the MX records just to find out this will not work.
Rich