Mailinator started 17 years ago as a weekend project to define the idea of “Free, Disposable, Email”. Back then, it ran on a single server with only a single developer. Over time, it’s popularity has exploded in terms of both incoming email and active users. As you might guess when you go from thousands of emails-per-day to thousands of emails-per-second, the behind-the-scenes technical stack needs to evolve - and Mailinator’s stack has had a quite a technical journey.
Mailinator has always been an excellent tool for testing your system’s emails. It allows customers to instantly have an infinite number of Private Inboxes which they can access via Web, API, or via Mailinator’s Rule System. One of the primary use cases for that is the “click the links” in those emails to close the loop with your test. That might be confirming an email for sign-up or hitting the reset-password link.