The free migration tools that Office 365 provides are good ... if everything is 100% ready and all requirements have been met.
One of the requirements for the online migration tools to work is for the (source) mail server to have a trusted 3rd party certificate installed - the internally signed one that most small businesses use is not valid and causes the migration tool to fail. Well it does not even start without this in place.)
... This is the way to move mail ... Set and Forget style.
Trust me - you will want to use migrationwiz.com
[Last edited Oct 26, 2011 22:32:50]