What does the free email validation API check exactly?

Syntax (RFC), MX records, 500+ disposables, role-based flags, and typo suggestions with a 0-100 score.

How many free requests does the email validation API allow?

500 per month, no key needed — perfect for small SaaS or list cleans.

Can I use this free API for production signup forms?

Yes, integrate via JS/Python; catch issues real-time without paid tiers eating budget.

Free Email Validation API That Sniffs Out Typos and Throwaways in Seconds

Imagine your signup form rejecting '[email protected]' with a helpful nudge: 'Did you mean gmail.com?' This free API makes it real, saving your database from junk without costing a dime.

theAIcatchup Apr 09, 2026 4 min read

JSON response from free email validation API showing typo suggestion for gmial.com

⚡ Key Takeaways

Free API validates emails with syntax, MX, disposables (500+), typos, and scores — 500 reqs/month no key. 𝕏
Catches 'gmial.com' → suggests 'gmail.com'; blocks role-based like info@. 𝕏
Transforms signups, newsletters, leads: no more bounces or fake data pollution. 𝕏

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theAIcatchup

Community-driven. Code-first.

#Cloudflare Workers #MX records check #disposable email detection #email validation API #free API #free developer API

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Originally reported by Dev.to

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