uses Hotmail. It's free. My dad used it before he died and she is continuing to use his address. Except there is a lot of ads taking up room on the screen. And it is a little too small for her to read if she prints it out. So sometimes I copy one to word and blow it up for her.
Good luck with her & computer. I hope you or someone lives close enough to pop over and help. I am the "support tech" person for my mom and some of my friends. Sometimes it's hard to figure out what they are explaining over the phone.
Recently my technologically impaired Grandma received a new computer as a gift. She would like to use it for e-mailing her kids and grandkids, but has almost no experience with computers (and is in fact intimidated by them). I was wondering if any of you had any experience teaching older people how to use e-mail, and more importantly, what e-mail client you would recommend.