Know an address is real before you send, not after it bounces.

We check the address against the standards (RFC): format, valid characters, and a well-formed domain. Malformed addresses are caught right away.

We confirm the domain exists and has an active mail server. Without a valid MX record there's no way to deliver, so the address is flagged on the spot.

We identify the provider behind the domain (Gmail, Outlook, Zoho and others) to apply the right verification for each type of server.

We separate individual addresses from role accounts, like contact@, sales@, and support@, which tend to have different engagement and behavior.

We flag emails from disposable or temporary services, like Guerrilla Mail, that inflate your base without ever becoming real customers.

We detect catch-all domains, which accept any address and mask the invalid ones, so you know where the server's answer can't be trusted.

We flag full inboxes, which reject messages temporarily and turn into soft bounces, so you don't keep hitting an address that isn't receiving.

We mark disabled or suspended addresses, which once existed but no longer receive, before they turn into a hard bounce on your next send.

We connect to the server and confirm the mailbox actually exists and accepts messages, with full SMTP verification, without sending a single real email.

When it's an obvious typo, like gmial.com instead of gmail.com, we suggest the fix so you recover the contact instead of just discarding it.