You cannot, however, add images to your Yahoo! Mail signature through this route. A little manual editing of the HTML involved or some copying and pasting do the trick, however, if the image you want to insert in your signature is available from a publicly accessible web server.
Insert an Image in Your Yahoo! Mail Signature
To add an image to your email signature in Yahoo! Mail:
- Open the image you want to insert in Internet Explorer or Mozilla Firefox.
- The image must be on a web server, i.e. its address must start with "http://". You cannot use an image that resides only on your hard disk.
- If you don't have a web site, you can use a free image hosting service instead.
- If your image is larger than some 100x100 pixels, consider shrinking it to more handy proportions before you put it online.
- To open an image that appears as part of a web page:
- In Internet Explorer:
- Click on the image with the right mouse button.
- Select Properties from the menu.
- Highlight the entire string under Address: (URL.
- Press Ctrl-C.
- Click OK.
- Highlight the address bar.
- Click Ctrl-V.
- Press Enter.
- In Mozilla Firefox:
- Click on the image with the right mouse button.
- Select View Image (or, if not available, View Background Image) from the menu.
- Press Ctrl-A (Windows, Linux) or Command-A (Mac).
- Now press Ctrl-C (Windows, Linux) or Command-C (Mac).
- Open Yahoo! Mail.
- Select Options | Mail Options from the top right navigation area.
- Go to the Signature category.
- Follow the Rich Text link, if available.
- Position the cursor where you want to insert your image.
- Press Ctrl-V (Windows, Linux) or Command-V (Mac).
- If you use an image uploaded to a free image hosting service:
- Click on the image.
- Link the image to the image's page address at the free image hosting service (something resembling "http://img.imageshack.us/my.php?image=example.jpg" if you use ImageShack, for example).
- Click Save Changes.
Insert an Image in Your Yahoo! Mail Classic Signature
To add a graphic to your email signature in Yahoo! Mail Classic:
- Access Yahoo! Mail with Windows Internet Explorer.
- Select Mail Options from the navigation bar.
- Follow the Signature link.
- If the HTML toolbar is not yet visible, click Color and Graphics.
- Make sure View HTML Source is checked.
- Insert the image using the HTML <img> tag.
- To place an image at the left of your signature, insert '<img hspace="5" src="http://z.about.com/h/gp/email.gif" align="left" width="55" height="50" />' (without the outer quotes) at the beginning, for example.
- Make sure the image is accessible on a web server and reasonably small in proportions (not higher than about 75 pixels).
- Uncheck View HTML Source to test your signature.
- Click Save.

