How to Add a Picture to Yahoo Email Signatures
Paste an image into the signature box to include it in your signature.
Select the gear in the upper-right corner of Yahoo Mail, then select More Settings. Select the Mailboxes on the left. Select your email address. Scroll down in the right pane and click inside the Signature box. If the signature box is grayed out, click the switch beside Signature to enable it. Enter your name and any other text that will be part of the signature. Any photo you use in your signature must first be uploaded and accessible at an online hosting website. Upload it to a site such as Imgur or another hosting site. The image should be small to look right at the bottom of an email. If it’s large, resize it so that it fits better with your email signature. Go to the picture at the host site in a browser, right-click (or Control-click), then select Copy from the menu. Position the cursor in the signature box where you want the image to appear. Right-click and select Paste to place the image in the signature box. Choose Save when you’re finished with the signature. Open a new email in Yahoo to view your email signature.
