I was able to send them by switching to Safari.but as the same message comes up there, I think it may be a temporary solution. Everything was working okay, but the last two emails I've tried to send out of firefox have not sent. Gmail and facebook both inform me every time I log in that my browser is old and soon won't be supported anymore. However, the inability to upgrade my browser is becoming a big problem. So, my computer still is able to do everything I want it to with a good amount of speed, and only has a few periodic 'old computer' symptoms. I don't need to do so much on my computer.I browse the web, talk to people on skype, listen to music, watch movies, and type things up.
I stopped being able to update Firefox probably around 2 years ago on my computer, and can't download Google Chrome, all because I am running 10.4.11.
