Mihai Z

mihai.zap

Backend engineer. Email verification with real SMTP probing on my own infrastructure — returns unknown instead of guessing.

ACTOR STATS

1 public Actor

2 total users

1 monthly user

>99% runs succeeded

I build data tools that do the hard part properly instead of guessing.

⚙️ Real infrastructure, not wrappers — my email verifier runs its own SMTP prober on dedicated infrastructure with a clean IP and matching forward/reverse DNS, because outbound port 25 is blocked almost everywhere and most verifiers quietly fall back to guesswork.
🔬 Catch-all is measured per domain — whether a server accepts unknown recipients is a per-tenant setting, not a property of the mail provider. You have to probe it, not infer it from the MX record.
📊 Honest reporting — when something cannot be verified, my tools return unknown rather than guessing, and confidence scores come with the evidence behind them.
🛠️ Background — backend and protocol work; Node.js, SMTP/DNS internals.

Public Actors