> It will be hard to anonymize who's sending it Actually, there are well known and well tested ways to do it. You would probably enjoy learning about remailers

> It will be hard to anonymize who's sending it Actually, there are well known and well tested ways to do it. You would probably enjoy learning about remailers and nymservers. http://en.wikipedia.org/wiki/Anonymous_remailer http://en.wikipedia.org/wiki/Anonymous_remailer http://en.wikipedia.org/wiki/Pseudonymous_remailer http://en.wikipedia.org/wiki/Pseudonymous_remailer It's a lot of work, and it's easy to make security compromising mistakes, but it is a very interesting topic to learn.