I am trying to migrate my first user from in house exchange to office 365 on a different domain.
He has LOADS of folders under the inbox. I exported that account as a PST then imported the PST on another machine into the new 0365 account. It seemed like contacts and calendar moved over (they both show the same number of contacts and calendar entries.)
But some / lots of folders are missing mail. Is there an app / way to print the folder size data rather than scroll through the window when in outlook?
I am hoping to export from the outlook client. 7.5GB of data - should I just backup the subfolders as smaller PSTs and import each separately?