I have 3 domain names through Homestead hosting. I am trying to find out if I can use those domain names for e-mail purposes only within the O365 Exchange hosting online, for sending/receiving e-mails accordingly. And if contacts can be sync'd by all 3 accounts within the o365 hosting.
And would I have to pay for 3 user accounts per month? Or would my plan be 1 subscription with the ability to have all 3 domain accounts being "used" (if you will) with Exchange Online... ?