mailonce

mailonce

solo dev behind MailOnce temp email tool

About

I'm the solo developer behind MailOnce, my first product built and shipped from the ground up. I'm focused on building a fast and simple temporary email experience for email verification, OTPs, verification links, and testing workflows. I'm also exploring developer-focused tools around email testing and authentication flows, including the open-source MailOnce Developer Kit. I'm here to learn from other makers, share what I learn while building MailOnce, and get feedback from people actually using the product.

Badges

Tastemaker
Tastemaker
Gone streaking 10
Gone streaking 10
Gone streaking
Gone streaking
Gone streaking 5
Gone streaking 5

Maker History

  • MailOnce
    MailOncePrivate temporary email for signups, OTPs and verification
    Sep 2026
  • 🎉
    Joined Product HuntSeptember 3rd, 2026

Forums

2d ago

MailOnce - Private temporary email for signups, OTPs and verification

MailOnce is a private temporary email service for fast signups, OTP codes and email verification without exposing your real inbox. Each inbox is private to your browser session instead of publicly accessible. Create random or custom temporary addresses, receive emails in real time, detect OTP codes and verification links, and manage everything from your browser. No account is required for basic use. Built for everyday privacy and developer testing.

⛏️ What's the last thing that broke while building a Product?

Many makers have shared the same experience: posts about what broke are 1000x more interesting than posts about polished things that are working perfectly =D

And sometimes, nothing is actually broken.
You just discover something that makes you change direction.

For us, we built a CMS where users could create their own pages:

userpage/ourdomain.com

If you use Cursor with OpenAI models, what's your plan before the deadline?

@OpenAI is winding down its contract with @Cursor, following Cursor's acquisition by SpaceX.

The two companies have worked together for nearly four years. But OpenAI's contract with Cursor included a clause allowing cancellation after a change of ownership, and they're using it. They have all the right to do so.

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