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

InboxKitten - An open-source, disposable email service 💌

Throttle - Nov 5, 2016 - Welcome to the DOS throttle homepage.

Unroll.me - A cleaner inbox is just a click away! Unroll.Me gives you the tools you need to manage a cluttered mailbox full of pesky subscriptions emails.

ImprovMX - Free email forwarding