In Yahoo! Mail, how can I set up a signature?
Hi Christina, Click “Options” in the upper-right corner of your inbox. There should be a link for “Signature” in the center of the page. Click on it and you can enter text or use color and graphics as you wish to create a signature for all your out-going email. If you’re using the beta version, go to “Options” and “Compose” is the second item on the left-hand column. You can create your signature there. Hope this helps!