Currently Being ModeratedDec 8, 2013 9:37 PM (in response to redesigned)
Currently Being ModeratedDec 8, 2013 10:07 PM (in response to Tuttle)
That looks like the right idea, except mail.app in mavericks doesn't have a signature bar anywhere i can find to change that setting. Certainly nothing like that when composing a message. Same issue, but i think the solution applies to an old apple mail.app version.
Currently Being ModeratedJan 15, 2014 7:13 AM (in response to redesigned)
Tuttle's reply fixed this for me and I am also using Mavericks.
The way to make the changes below is to start a new message.
To stop generating signatures
In OS-X Mail, compose a new message. At the bottom-right of the New Message address panel, you should see two extra icons (just to the right of the "Signature" menu). One icon looks like a padlock, the other like a star-burst balloon. When Mail is set to digitally sign messages, the star-burst balloon will have a small "check-mark" in the center:
To set the Mail application to stop signing mail, you need to click the star-burst balloon to make it have a small "X" in the center, which indicates that the message will not be digitally signed:
The sender only needs to do this once, and Mail will remember not to sign any more messages.