using imapsync and altnamespace?

[David Blewett]

> So does anyone know *for sure* how the --delete function will behave using
> imapsync?  Does it only delete that which it confirms was successfully
> transferred?

I used it to successfully move over the bulk of my mail. In my 
experience, the --delete function did exactly that. It only deleted 
what was successfully moved. Also, the messages are still there in the 
mailbox. They're just marked as deleted now. To actually remove them 
from the mailbox, you have to use expunge.

David