Mail not opening files or Preferences menu

[Andygser]

My Mail app is not allowing me to open emails in a new window only read them in the preview pane on the right. So I thought a setting in Preferences had gone adrift. But I cant open preferences either using either the drop down menu or shortcut: Cmd,
Mail works ie I can send and receive though suspect its slow as I always receive things on my iphone first.

What's going on?

I'm running OSX 10.8.3 Mountain Lion on a 6 month old iMac.

I've just reinstalled the OS and its had no effect.

Any advice much appreciated. Thanks

 

[Weaselboy]

Quit Mail.

Open Finder then hit shift-command-g keys all three at once.

Paste in the line below and hit enter.

~/Library/Containers/com.apple.mail/Data/Library/Preferences

Scroll down to find the file com.apple.mail.plist

Option drag that file to your desktop so you have a backup copy. Then delete the file from Finder.

Now restart Mail and see if you can access prefs. You will need to reenter your preferences.

 

[Andygser]

Quit Mail.

Open Finder then hit shift-command-g keys all three at once.

Paste in the line below and hit enter.

~/Library/Containers/com.apple.mail/Data/Library/Preferences

Scroll down to find the file com.apple.mail.plist

Option drag that file to your desktop so you have a backup copy. Then delete the file from Finder.

Now restart Mail and see if you can access prefs. You will need to reenter your preferences.

Many thanks Weasleboy. Got it working again.