Is there a remailer that allows you to send and receive anonymously? I know Mixmaster but do not see how you receive emails.

I guess the main issue is receiving emails. Is there a service or tool that allows me to setup in such a way that any number of email addresses I give out (or use as a from address on Mixmaster emails), forward to my one preferred email? Having the send and receive in one service is attractive and should be easier to use. This would allow a back and forth conversation with another party who is sending you messages, perhaps each time using a new email address to respond to you, but never knows your real address.