EmailCheck - Email Validation API (Beta Testers Wanted)
Hey Indie Hackers!
Built EmailCheck.dev after NeverBounce was costing me $500/mo.
Mine is $9/mo for 5,000 validations (90% cheaper).
Perfect for validating signups, blocking disposable emails.
Beta offer:
- Free Pro for 3 months ($29/mo value)
- 50% lifetime discount after
- Direct support
Tech: .NET API, Supabase, Stripe, Fly.io
Need 25 beta testers - who's in?
Great idea!
Question:
It detects catch-all domains, but like most validation approaches, it can’t guarantee 100% accuracy. Catch-alls are tricky since the server accepts any address, so it’s more about flagging them than definitively validating them.
At what point does email validation actually start hurting conversion more than it helps data quality?
I don’t think there’s a clean line, but I started noticing issues when validation got too aggressive. Blocking obvious disposable domains helped, but anything beyond that (like stricter heuristics) started risking legitimate users.
Feels like the sweet spot is catching the low-effort spam without adding friction or false positives during signup.