When I select MaiI Preferences the only thing that opens is blank Signatures. I saw a post from October 2018 with a similar issue but the proposed solution did not work for me. Anyone have an idea?
MacBook Pro 13", macOS 10.14
The linked discussion seems to talk about deleting plist files from two area, one is "Preferences" and the other is "Containers".
While it is generally accepted that removing plist files is safe because they will be recreated, you need to take care in not removing those that may be important to how the Application functions, I would not therefore remove the "Data" folder in the latter case (not yet anyhow).
Some have suggested "reinstalling" the OS may help in this situation, it doesn't remove user data but aims to simply reinstall only the macOS operating system itself.
http://osxdaily.com/2018/10/10/how-reinstall-macos-mojave/
You could try booting in to Safe Mode (hold down Shift key) before attempting any of the above because that process has been known to clear up glitches due to the fact it carries out some house cleaning duties along the way.
This article may also be useful and the relevant section is copied below.
https://appletoolbox.com/2018/09/mail-not-working-after-macos-mojave-upgrade-how-to-fix/
But again it talks about "messing" with files/folders other than just plist's, which personally I'm not happy about, saying that I believe the method used allows you to reverse the process.
Hope some of this helps.
The linked discussion seems to talk about deleting plist files from two area, one is "Preferences" and the other is "Containers".
While it is generally accepted that removing plist files is safe because they will be recreated, you need to take care in not removing those that may be important to how the Application functions, I would not therefore remove the "Data" folder in the latter case (not yet anyhow).
Some have suggested "reinstalling" the OS may help in this situation, it doesn't remove user data but aims to simply reinstall only the macOS operating system itself.
http://osxdaily.com/2018/10/10/how-reinstall-macos-mojave/
You could try booting in to Safe Mode (hold down Shift key) before attempting any of the above because that process has been known to clear up glitches due to the fact it carries out some house cleaning duties along the way.
This article may also be useful and the relevant section is copied below.
https://appletoolbox.com/2018/09/mail-not-working-after-macos-mojave-upgrade-how-to-fix/
But again it talks about "messing" with files/folders other than just plist's, which personally I'm not happy about, saying that I believe the method used allows you to reverse the process.
Hope some of this helps.
Found these discussions that are basically the same, due to the posters experience I would be prepared to trust their judgement with regards to removal of "com.apple.mail" folder.
Mail Preference window empty after update… - Apple Community
OK - i rebooted in safe mode and logged back in - Preferences did not work so that wasn't the solution.
I switched user accounts, opened Mail and the Preferences worked so i did not think it was a problem with the OS.
I then followed the process set out in https://appletoolbox.com/2018/09/mail-not-working-after-macos-mojave-upgrade-how-to-fix/ (see below) and it all seems to work now. I did not delete anything.
That's great news and was only too happy to help, but if you have time could you give a little more detail on what actually worked so others may benefit if going through a similar issue.
You mention login as Administrator, do you mean booting in to Safe Mode or did you switch User Accounts, also did you have to delete any files and if so from which location?
This discussion from Feb 2018 has a few suggestions, may be it has one you haven’t tried yet.
Mail preferences window is blank, mac os1… - Apple Community
Will have a go. Thanks
Message for Si - The process worked. I logged in as Administrator - the Preferences worked so I didn't think it was the OS (thank goodness!). Thanks very much for your support!
That summary will no doubt help anyone else experiencing similar, thanks for taking the time to reply and again, glad you managed to fix the problem.
Mail preferences not appearing
