Wow! I finally found a solution for this issue, it worked on three computers! Correct me if I make grammar mistakes.
The Problem:
iTunes won't sync mail in 10.7.3
The Cause:
unknown - bug
The Solution:
Looks like it's an upgrade issue, if I do it in a 10.7 clean environment it all works. So it's a 10.7.3 bug.
If a new installation is made, upgrades are done and mailboxes are created / migrated nothing will work.
If the mailboxes are imported with a 10.7 clean installation and AFTER THAT the upgrade to 10.7.3 is made ALL WORKS!!
That makes sense in many cases, all CLEAN configurations of mail in 10.7.3 fail.
So, it should work:
- Install 10.7
- Migrate Data
- Open Mail and eventually migrate
- Sync mail with iTunes
- Restart
- Upgrade to 10.7.3
- Check, worked for me!!
Tested making a new account, not yet by migrating with migration assistant.
BTW, I called AppleCare for support and I am terribly dissatisfied by their service. I still had my free 90 days call for my new computer and they required me to BUY AN APPLECARE FOR MY IPHONE!! It's a 4S! No, thank you!
49 minutes of call, THREE operators, aaaand... registrations of course, how much I hate registrations! "could you please tell me the serial?" (for six times). Apple, you suck in helpdesk. ðŸ˜
I work for an Apple Authorized Reseller.