List verification

How to verify an email list before sending

Upload or API-verify the list before the first campaign mail. EmailPal probes catch-alls over SMTP (RCPT TO only, nothing delivered) and returns six verdicts so you are not paying for bounces with reputation.

List verification by EmailPal

EmailPal verifies addresses before you send so catch-alls and disabled mailboxes do not become bounces on a warmed IP. Six verdicts, SMTP probes that never deliver a message, daily allowances on every plan, and the same engine on the dashboard, REST and MCP.

Six verification verdicts

What valid, catch-all, unknown, role, full mailbox and disabled mean on an EmailPal verification result — and whether you should send to each one.

What is a catch-all email?

A catch-all (accept-all) domain accepts mail to any local-part, so "is this person real?" cannot be answered from SMTP. EmailPal flags catch-alls as their own verdict instead of calling them valid.

Catch-all detection

How EmailPal detects catch-all domains by probing a mailbox that cannot exist before trusting RCPT TO on your contact. Catch-alls are their own verdict, never a valid you cannot rely on.