sup3rS3cretMes5age - A safe, simple tool for one-time (self-destructing) messages
TempMailAddress - The TempMailAddress protects your primary mailbox. TempMailAddress.
Mailinator - Any Inbox. Any Time.
33Mail - Simple free disposable email address service, unlimited free disposable email addresses.
10 Minute Mail - Temporary disposable e-mail service to beat spam. Avoid spam with a free secure e-mail address.
Moakt Mail - Moakt is a temporary mail that expires after an hour from the time it is created.