Computerless email

As many of you know, I'm a big Ceiva fan.  Ceiva is a digital picture frame that all your friends and family can load pictures into from the web - a perfect gift for someone without web access who wants to see all your digital pictures.  Now they've got another device which sounds just as good.  This new HP device, Presto, is a standalone printer.  People can send email or pictures to it and it automatically prints it out.  I would send my Grandma a lot more letters if I could just email them to her!