Mac OS X Mail: How to add a signature to your email

You can add one signature to all messages automatically or create several and choose one when you compose a message.

To create a signature:

1. choose Preferences from the Mail application menu and click Signatures
2. select the signature you created and drag it to your account
3. to add the signature automatically to every message, choose it from the Select Signature pop-up menu.
   to choose a signature when you compose a message, select “Choose signature when composing email”.