As most Gmail users would know, HTML signatures are not supported in Gmail. I’ve just moved my domain over to Google Apps, and I’m really not liking the standard text signatures.
Today I went on a quest to see if there was a work around, more specifically I wanted to see if there was a Greasemonkey script that could do something, but I found one better, an actual Firefox add-on.
Blank Canvas Gmail Signatures automatically inserts HTML signatures into your Gmail message. So far I’m yet to come across any problems with this plugin. You can have multiple signatures, and also works with multiple accounts.
There is only one drawback for my use. I have a bookmark that opens the compose message window in a new window in the sidebar, and this add-on doesn’t yet support that, but this is no biggy.
Now that I have a HTML signature, I’m happy. It’s been one thing that has annoyed me, and I think that Google should add this in, but until then, this add-on will do, and I’m happy. 
