Email, Messaging, & Video Calls Email 42 42 people found this article helpful How to Set Up Your Yahoo Mail Signature Personalize messages you send from Yahoo Mail By Heinz Tschabitscher Writer A former freelance contributor who has reviewed hundreds of email programs and services since 1997. our editorial process Heinz Tschabitscher Updated November 22, 2019 Email Yahoo! Mail Gmail Tweet Share Email Yahoo Mail supports email signatures, which are automatically appended to the bottom of every new message you create. You can even include formatted text, images, and links in your signature. Information in this article applies to the web version of Yahoo Mail as well as the Yahoo Mail mobile app for Android and iOS. How to Create a Yahoo Mail Signature To add a signature to your messages using the web version of Yahoo Mail: Select the gear in the upper-right corner of the window, then choose Settings. Select Accounts. Select your Yahoo Mail account. In the Signature text box, enter the text for your signature. Yahoo Basic Mail doesn't support text formatting options for emails or signatures. Your email signature will be displayed in plain text instead. Select Save. How to Disable Your Yahoo Mail Signature If you no longer want to automatically include a signature in your emails, return to the signature settings and clear the Append a signature to the emails you send check box. Your signature will still be saved in case you want to reactivate it later. How to Add Email Signatures in the Yahoo Mail App To add a signature to your messages using the Yahoo Mail app: Open the Yahoo Mail app and tap the hamburger icon. Tap Settings. Scroll down and tap Signatures. Turn on the Customize for each account toggle switch to enable email signatures. In the text box below your email address, edit the default message. Tap Done or Back to save the signature.