iTunes sync mail accounts problem - list pane empty / greyed out

Hi ThatGuy, thanks for your feedback, I'll try uploading the image again. The problem is exactly that I just can't thick that box! I can see no mail accounts listed too, it's just like iTunes doesn't see my 4 Apple Mail accounts

After the fresh Lion install I recreated the mail accounts on the Mac (four), but I already had two of them on the iPhone (that was synced with my old Lion install). When I tried to resync the iPhone with my new iTunes I instantly noticed that I couldn't resync mail accounts and contacts (boxes not thickable), but calendar and apps worked fine. I resolved the contacts problem by clearing the /library/applicationsupport/syncservices folder and tinkering with the contacts app, but no luck with mail accounts. So I restored my iPhone to factory condition and retried with no luck. iTunes gives me no errors, syncing works just fine, it has just never seen my Mail accounts.

edit: I forgot, after trying all of this, I recreated two mail accounts on my iPhone, they work fine in retrieving mail, but nothing changed in iTunes behaviour.

I also tried resetting syncservices with the command

/System/Library/Frameworks/SyncServices.framework/Versions/A/Resources/resetsync .pl full

as stated in apple article, still no luck

I admit I don't remember if mail account sync worked in Lion when I upgraded from Snow Leopard, before the clean install, because iTunes was already setup in Snow and I didn't need to change anything.