Free temp email checker. Paste an email, Instantly see if it’s a known throwaway (Mailinator, Yopmail, Temp-Mail, and ~210k domains), a role address, or has MX with no signup, no API key, and no SMTP probing. Free public API for signup protection.

Hey Product Hunt, I'm Twinkal, co-founder of Reloop. We noticed a common problem: People sign up for SaaS products and newsletters with throwaway emails that vanish within the hour. The result: hard bounces that hurt your domain reputation, skewed signup metrics, fake trial accounts, and wasted transactional sends. So we built a free Temp Email Checker It checks: - Valid email format (RFC syntax) - Known disposable domains (~210k, updated daily) - Generic role prefixes (admin@, info@) - Working mail servers (MX lookup) We never probe the actual mailbox, just clean, surface-level checks. No sign-up needed, and there's a public POST API you can drop into your registration flow. Try it: https://reloop.sh/tools/temp-ema... (test with you@mailinator.com) We'd love your feedback: - What other checks would make this more useful for your signup flow? - What other developer utilities would help your deliverability workflow? Thanks for checking it out! 🚀

Thanks for offering a free API for temporary email detection! Most people charge for such a useful tool, and it helped me reduce spam signups. Love the tool, Reloop! ❤️

Reloop Temp Email Checker

Block disposable emails & protect your sender reputation

Block disposable emails & protect your sender reputation