Mavericks Mail will not save preferences I have the updated version of Mail, and still having Gmail problems, but one problem at a time here… Currently the headache is that it will not save any preferences: window layout, junk mail filtering off, etc. Every time I quit and re-launch it is back to default settings. Any suggestions?
Make sure that all the permissions are correct on your home folder.
You can use the ACL tool on the Recovery HD to do this:


Boot into the Recovery HD using ⌘R.
Run resetpassword in Terminal (available from Utilities → Terminal).
Select your account from the drop-down list.
Click the Reset button for Reset Home Directory Permissions and ACLs.