MailCheck

MailCheck

Stop Free Trial Abuse with Advanced Email Verification

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MailCheck is an advanced email verification API that helps businesses validate email addresses in real-time. Identify and block disposable email addresses to prevent free trial abuse and ensure you collect only high-quality, deliverable email addresses.
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MailCheck gallery image
MailCheck gallery image
MailCheck gallery image
MailCheck gallery image
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Launch tags:
API•Email Marketing•SaaS
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What do you think? …

Shubh Kesharwani
Maker
📌
We built MailCheck to solve a problem we personally experienced — users exploiting free trials using disposable emails. After seeing how much it can impact businesses (including some of our favorites), we knew we had to take action. MailCheck is simple to integrate, powerful under the hood, and built with developers in mind. Would love your thoughts, feedback, or feature requests — and if you're building something that could use this, feel free to reach out. FYI, you get a free 7-day trial when you signup on mail-check. No credit card required! Just your genuine emails . . .
Desmond

This could save businesses so much time and fraud risk! How does the real-time verification handle high-volume traffic without slowing down sign-up flows?

Kushagra S
Maker

@desmond_ren1 MailCheck has various layers of checks and each is executed only after the previous one flags the email as suspecious. In general for valid users, the latency will be no more than a DB call in a middleware.

Jun Shen

Great to see a focus on reducing fake sign-ups! 👍