I'm working on a job today where we might need to use imapsync. I didn't see it in Fedora (or in the package review queue), so I whipped up a package for it (unpacked). I doubt I'll have time to submit it soon, so if anyone wants to run with it, you have my blessing. (Cc me on the bugzilla request so I'm aware of it though, please.)
There are some UTF-8 warnings from rpmlint that need to be fixed. See the comments at the beginning of imapsync.spec.