SaaS was flooded with fake signups. Built an API to stop it. It works.

When I launched InputBloc it immediately got hammered with fake users — everyday.

Needed to filter them at signup, not after. So I built MailBloc: a simple API that scores emails and IPs to block fraud before it hits your database.

What MailBloc does:

• Email & IP risk scoring

• Catches disposable emails, VPNs, Tor network, datacenters, known fraudsters

• Stops fake signups cold

• Also helps reduce Stripe chargebacks from abusive users

• Simple API, generous free tier, you might never pay me a $

I've been running it on InputBloc for months. Spam dropped to zero so far.

Try it: https://mailbloc.com

My question: Are you dealing with fake signups or fraudulent users? What are you using to filter them right now?