Skip to content
List verification
MX + SMTP RCPT PROBE · NOTHING IS IMPORTED OR SENT · BOUNCES ARE THE FASTEST WAY TO BURN A WARMED SENDER
PASTE OR UPLOAD
0 unique address(es) detected

Addresses are graded against DNS/MX, disposable-domain and role lists, your blocklist, and — with the SMTP probe on — a real RCPT TO conversation stopped before DATA, so nothing is delivered. Up to 1,000 addresses per run.

Import to leads
VALID
0
Mailbox accepted at SMTP — safe to send.
RISKY
0
Catch-all, role account or unprovable — send sparingly, never on a fresh sender.
INVALID
0
Dead, disposable or blocklisted — never send.
Paste or upload a list, then verify it to see valid, risky and invalid counts.
LEADS ALREADY IN THE DATABASE
Nothing verified yet.