Thanks for the insight.
So I have to register a 365 account with support@sitename.org or something? Does it have to be in any way connected to my hosting provider? Some hosting providers give you email site domain for free with a web-client, can it be used instead?
So I have to register a 365 account with support@sitename.org or something? Does it have to be in any way connected to my hosting provider? Some hosting providers give you email site domain for free with a web-client, can it be used instead?