
It's not the end of the world if it's a manual process and requires re-downloading the entire mailbox, but I'd love to avoid that if possible. I have about a dozen users and their workstations aren't managed by Active Directory but I'm happy to run through a few steps with each of them. if the id's of the mail items aren't preserved when migrating from one server to another)?

Option 1 is probably terrible as it'll require outlook to re-download their entire mailbox, but maybe that's required (e.g.


I'm migrating from hosted Exchange 2007 using Sherweb to using Office 365.
