I Built a Disposable Email API for Developers

Published: (March 3, 2026 at 07:12 PM EST)
2 min read
Source: Dev.to

Source: Dev.to

As a developer, I constantly run into the same problem while testing apps: I need email addresses for verification emails. Whether it’s testing signup flows, password‑reset emails, QA automation, bot testing, or CI pipelines, using my personal inbox quickly becomes messy with dozens of test emails.

So I built OpenInbox — a disposable email service designed for both developers and regular users.
👉 https://openinbox.io

Why I Built It

Many temporary‑email websites already exist, but they usually have a few problems:

  • Slow email delivery
  • Overloaded with intrusive ads
  • No developer APIs
  • Unreliable inboxes

I wanted something that was:

  • Fast
  • Simple
  • API‑friendly

Thus, OpenInbox was born.

What OpenInbox Does

OpenInbox lets you instantly create temporary inboxes and receive emails without signing up. You can use it directly from the browser or through the API.

Common use cases include:

  • Testing signup verification emails
  • Automation scripts
  • QA testing
  • Protecting your real email from spam
  • Temporary registrations

Looking for Feedback

I’m continuously improving OpenInbox and adding new features like:

  • Browser extensions
  • More API capabilities
  • Automation tools

If you’re a developer who needs disposable emails for testing, feel free to try it.
👉 https://openinbox.io

I’d love to hear your feedback or suggestions.

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