BURN.link - Send secure, encrypted, self-destructing messages
Mailinator - Any Inbox. Any Time.
sup3rS3cretMes5age - A safe, simple tool for one-time (self-destructing) messages
TempMail.altmails - Disposable temporary email addresses
1ty.me - If you need to send a password or some other form of simple but sensitive information to someone...
Harakirimail - Harakirimail is a free disposable email service. Just send email to anythingyouwant@harakirimail.