Apple says Mail Update for Mavericks includes improvements to general stability and compatibility with Gmail, including the following:
• Fixes an issue that prevents deleting, moving, and archiving messages for users with custom Gmail settings
Addresses an issue that may cause unread counts to be inaccurate
• Includes additional fixes that improve the compatibility and stability of Mail
Choose Apple menu > Software Update to check for the latest Apple software via the Mac App Store, including this update.
You can also download the manual update installer. This is a useful option when you need to update multiple computer, but only want to download the update once. Standalone installers are available from Apple Support Downloads:
For more information, visit: