Apple Mail not syncing with FastMail
Apple Mail is failing to sync with FastMail using IMAP. Most messages sync OK but some don't.
My iPad syncs OK so I reckon it has to be a problem with Mail.
If I force Rebuild the FastMail Inbox (in Apple Mail) the missing messages turn up.
Anybody got any idea what may be going wrong?
Thanks.
MacBook Pro (13-inch Mid 2012), OS X Mavericks (10.9.5)