Apple Mail signature list missing

TLRLaw wrote:

The middle column in the signatures pane -- that shows the names of the signatures -- doesn't show up anymore. I haven't upgraded by software or made any other changes. I've tried logging out and shutting down my computer, and I've checked every option and preference imaginable.

I hope someone else has seen this and can help. I really need to be able to create, name and access my signatures.

https://discussions.apple.com/content/attachment/81613d96-9493-424e-8e32-4a1db13f4342

If it is a corrupt plist you can try— quit the mail.app

and Delete the com.apple.mail.plist from Finder>Go>Go To Folder, copy and paste:

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

relaunch the mail.app and test. The plist will automatically rebuild itself.

if no change you can always Control click the deleted .plist from within the Trash>Put Back

If no resolve—

Quit mail.

From the Finder>Go>Go to Folder, copy & Paste:

 ~/Library/Containers/com.apple.mail

Highlight all the contents in this folder. Place your mouse on the selection,

Then Control click (right-click) and choose "New Folder with Selection”. Do not move the new folder from this current location.

You can close the Finder window.

The next step will be to restart the Mac and test

After the computer is restarted, open the Mail.app> Preferences to see if it opens properly.

ref: step by step including pics:

https://discussions.apple.com/thread/251147316?answerId=252188310022#252188310022