Mailinator - Any Inbox. Any Time.
Throttle - Nov 5, 2016 - Welcome to the DOS throttle homepage.
Guerrilla Mail - Guerrilla Mail is a web-based app that provides a disposable and anonymous email address. Users of the service are not required to set up an account in order to send or receive emails.
ImprovMX - Free email forwarding
MailDrop - maildrop is a Mail delivery agent used by the Courier Mail Server. The maildrop MDA also includes filtering functionality. maildrop receives mail via stdin and delivers in both Maildir and mbox formats.
Mailhero - Forward incoming mail to your real e-mail address