"Need to be sure that your automated emails are going out with the content you expect, but don't want to provide your personal SMTP credentials, or want a free alternative to Mailtrap? Use Mockbox.

Mockbox funnels emails straight from the SMTP interface to your browser - no sign up, no storage, no logins, no hassle. Quick, easy, and ephemeral. You can also use the Quick View."

(via @SwiftOnSecurity)