Abdul Wahab

Hey Product Hunt!

A traditional anti-spam strategy has always been Double Opt-In (sending an activation link to the user s inbox). However, many modern disposable email services give users a temporary inbox instantly allowing them to click verification links in seconds while still using a fake identity.

This leaves builders stuck choosing between adding heavy CAPTCHAs (which ruin conversion rates) or letting burner emails through.

What is your strategy?

Hey developers of Product Hunt!

As software engineers, nothing is worse than an API that takes hours to set up due to messy docs, complex auth flows, or high latency response times.

When building MailCheck API, our goal was simple:

1. Keep average response time under 50ms.

2. Zero complex dependencies a simple REST call with instant JSON feedback.

3. Drop-in snippets for Node, Python, Dart/Flutter, and cURL.

Hey PH Community!

When running a SaaS platform with a free tier or trial, inactive "junk" users created with burner emails do more than just waste server resources:

• They distort your actual user acquisition & churn metrics.

• They cost money in automated welcome email campaigns & proxy traffic.

• They ruin your email domain sender reputation when welcome emails bounce.

We built MailCheck API as a 50ms gateway to stop burner accounts right at the signup form before they ever touch your primary database.