Apple has finally released the crucial update to OS X Mavericks that fixes the Mail app for Gmail users.
It's a problem we noticed quickly after installing Mavericks in October. We noticed Mail causing a heap of syncing issues, bombarding our mailbox and leaving no choice but to enable Gmail's All Mail in Apple Mail. Additionally, we saw smart mailboxes breaking, as they alerted users to numerous unread messages without actually showing anything in the mailbox.
Apple told Pocket-lint in October that API changes were implemented upon Gmail's request, and these changes are causing the new Apple Mail behaviour in OS X Mavericks.
The update is labelled "Mail Update for Mavericks 1.0" and brings “improved stability and compatibility with Gmail, and includes fixes for users with custom Gmail settings.” Additionally, it brings fixes to an issue that caused unread counts to be inaccurate and includes additional fixes that improve the compatibility and stability of Mail.
Mavericks users can grab the update via the software update in the Mac App Store.