A lot of people Google about free anonymous email services. Here are some Anonymous email service providers for you.
http://www.mutemail.com/ MuteMail is a SMTP/IMAP/POP3 secure and anonymous email system located offshore in a country with strict privacy laws. Customers can send and retrieve email messages using their favorite email client (Secure Bat!, Outlook, Thunderbird, Eudora, Netscape, etc) or through the secure SSL Webmail interface. All email traffic is transferred through an SSL encrypted connection between customer’s email software and our secure email servers. For maximum email security clients’ messages content is covered by industry standard encryption algorithms and cannot be intercepted by ISP staff or other authorities. Clients’ email anonymity is ensured because sender’s network information e.g. IP address and host name (the originating country and internet connections details), is not shown in the message headers. We give an additional, non-standard SMTP port for clients, which may be of use if client’s ISP or company firewall blocks remote email account access. All accounts include advanced email forwarding features and vacation autoresponder. Secure email access and email anonymity provide high level of protection for your correspondence privacy.
Your 2nd option is to use TorGuards Tormail service. The free version gives you only 10mb’s which isn’t a lot but if you are serious about Email privacy then you should definitely consider paying the small fee for the unlimited version. http://torguard.net/anonymous-email.php
Use our Anonymous Email Service to communicate in complete security with any other OpenPGP-compatible email user anywhere in the world.. There is no known method which will allow a person or group to break OpenPGP’s encryption by cryptographic or computational means.