I troubleshoot a lot of systems that are designed to send emails, usually expecting a SMTP server to send from. However, I dislike using my personal email credentials (usually the only ones I have on hand) and setting up a local mail server or a mail server snippet isn’t always practical – so I wrote Mockbox.io.

Mockbox is free, ephemeral, and simple SMTP server simulation – it’s essentially a free, open source alternative to MailTrap.

Check it out at Mockbox.io, or contribute to the open source development.