Apple Mail doesn't display the signature dropdown in new email from line to select manual Signature I created multiple signatures for one Gmail account. Now depending on the context I would like to select a different email signature manually when composing an email. 
I created 3 different signatures for one mail account. In mail preferences, I set “choose signature” to "None”. for that mail account.

If I now compose a new mail, I don’t see the signature drop-down in the from line. 



How could I fix that?
Go to the Library folder of your user folder. It is hidden, so press command+shift+. to unhide all folders. 
Go to 



  Mail/V7/MailData/Signatures.



Move the two .plists to your desktop 


Restart your computer, open the application, and test. If it works okay, delete the plists from the desktop.