SniffMail verifies email addresses before they enter your system without sending a single email. One API call checks if the mailbox exists, detects disposable/temporary emails, flags full inboxes, and identifies catch-all domains. Built for developers: npm install, one function call, done. 10x cheaper than ZeroBounce and NeverBounce. 500 free verifications on signup, no credit card required.

Wispr Flow: Dictation That Works Everywhere — Stop typing. Start speaking. 4x faster.

Stop typing. Start speaking. 4x faster.

Hey Product Hunt! 👋

I'm Dayo, solo founder and developer behind Sniffmail.
I kept running into the same problem across every product I built. Fake and disposable emails getting past signup forms, bounces wrecking sender reputation, and no way to know if an email was real without actually sending to it.
So I built Sniffmail. It verifies email addresses at the SMTP level before they ever enter your system, no email sent, zero spam risk.

What makes it different:
Most validation tools stop at format and domain checks. Sniffmail goes deeper, it connects to the mail server and confirms the mailbox actually exists, detects disposable and temporary emails, checks if the inbox is full, and identifies catch-all domains. All in one API call.

I built it developer-first. One npm install, one function call, and you get a clear verdict. Works with any stack via REST API too. Full docs, no setup headaches.

I tested it against every major disposable provider: 10 Minute Mail, Mailinator, Guerrilla Mail, YOPmail, Temp Mail. 100% detection rate.

500 free verifications on signup, no credit card. Give it a real test and tell me what breaks.

Product Hunt exclusive: Use code PRODUCTHUNT before April 4th to get 1,000 free verification credits.

https://sniffmail.io

Hey! Smart timing on the launch 👋Clean solution — one API call and done is exactly how developer tools should work.

500 free verifications is a generous way to let people actually try it before committing.

Good luck today! 🚀