We've been doing tech support for a medical suppy company for several years. They have decided to rebrand themselves and have obtained a new domain name. They have around 30 user licenses (some are Enterprise E3 licenses with software some are just plain Exchange.)
What is the correct way to move them into this new domain? For one thing, many licenses are paid up for the year. Also, is there anyway to provide continuity from the old email addresses to the new? Or must we just export all their present accounts to PST files and simply attach them to the new Outlook profiles as archived data files?
Any advice would be appreciated!