Hey Product Hunt 👋 I'm Anthony, and I built MailGuard, an email verification API for developers. Every signup form quietly collects bad emails: typos like gmial.com, throwaway inboxes, and dead domains. They inflate your bounce rate and hurt your sender reputation. MailGuard catches them in one call. Send an email, get back: ✅ syntax + live MX (mail server) checks ✅ disposable / throwaway detection ✅ role-account flags (info@, admin@) ✅ "did you mean gmail.com?" typo suggestions ✅ a 0-100 deliverability score What makes it different: 🔹 A genuinely free tier: 500 checks a month, no card. 🔹 Up to 100x cheaper than the established providers, because it runs on Cloudflare Workers with no database, so my costs are tiny and I pass the savings on. 🔹 Privacy-first: it doesn't store the emails you verify. 🔹 Works with any stack (plain REST), plus a zero-dependency npm SDK. You can try it right now with no signup on the free email checker, or grab a key and drop it into your signup flow in minutes. Honest note: it does syntax + MX + heuristics, not live SMTP mailbox probing. That keeps it fast and cheap, and it's the right level for stopping junk at signup. I'd love your feedback, especially on the accuracy and the scoring. Happy to answer anything 🙏

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1d ago

Pre-launch update: free tier is live, paid coming soon, feedback wanted

Maker here MailGuard is in pre-launch: the free tier is live now (500 checks a month, no card) and paid plans go on in a few months. I'd love input from this community before then.

Quick recap of what it does in one call: syntax + MX checks, disposable and role-account detection, a "did you mean gmail.com?" typo suggestion, and a 0-100 deliverability score. It runs on Cloudflare Workers with no database, which is what keeps it fast and cheap.

You can try it with no signup via the free email checker.

Three things I'd genuinely value your take on:

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Mailguard

Email verification API with a free tier, up to 100x cheaper

Email verification API with a free tier, up to 100x cheaper

Forum Threads

Pre-launch update: free tier is live, paid coming soon, feedback wanted

Forum Threads

Pre-launch update: free tier is live, paid coming soon, feedback wanted