Some email signatures we have tested have what I assume to be an accidental blue border around their logo.
Some email clients
will display a border around images that are linked unless you’ve
specified a border of zero in your code.
How To specify a border of zero in your email signature HTML:
<a href=”http://www.testemailsignature.com”><img src=”http://www.testemailsignature.com/images/logo.png” width=”41″ height=”40″ border=”0″></a>
When a border is not specified at all, you may end up with a blue (or black) border around your email signature image.
It’s worth noting that images without links aren’t affected by
this email client quirk.
Here’s a list of the clients that will display borders by
default when an image is linked:
- AOL Mail (Explorer)
- AOL Mail (FF)
- Gmail (Explorer)
- Gmail (FireFox)
- Lotus Notes 8
- Lotus Notes 8.5
- Outlook 2000
- Outlook 2003
- Thunderbird
- Windows Mobile
