Firefox doesn't do email, it's a web browser.

If you are using Firefox to access your mail, you are using "web-mail". You need to seek support from your service provider or a forum for that service.

If your problem is with Mozilla Thunderbird, see this forum for support. http://www.mozillamessaging.com/en-US/support/
or this one
http://forums.mozillazine.org/viewforum.php?f=39

How do I add a signature to my gmail emails so it shows up on all my outgoing emails? can anyone help???

@barbiesattic, Yes, go to Gmail's settings in the General section. Scroll down to the signature section and add a signature. Also, next time you have a Gmail question, please post it to the Gmail forum where you can find people who are good at helping others with Gmail issues.

Thanks! handsomeorlandoman

Thanks for replying. I posted this a long time ago and did finally figure it out via a friend but thank you for your help. Its much appreciated