

They cannot leave some existing accounts with the current domain hosting company and set up new ones at Microsoft 365? eg with the original Exchange hosting company and set with Microsoft 365 If 3 above is true then presumably they have to migrate ALL their mail across to Microsoft 365. If Not do they still have to point their domain at the Microsoft mail servers using ANames, MX records etc? If they want to use their existing domain names for their Office 365 email do they have to transfer their Domain to Microsoft? What type of email service comes with Office 365 Premium. Have emails associated with these domain names.

Both already have registered domain names and websites hosted elsewhere and both I have two customers who are considering migrating to Office 365 Small Business premium but I am having difficulty advising them what exactly they get for their subscription.
