How did I get listed?

Often from spam complaints, hitting spam traps or sending to many bad addresses.

How do I get removed?

Fix the cause first, then use the list's removal form. Some lists also expire listings on their own.

Can bad addresses get me listed?

Yes. Sending to old or invalid addresses is a common cause, because dead addresses can be turned into spam traps.

Why isn't Spamhaus in the results?

Spamhaus needs a paid key for commercial lookups, so we list it as not checked rather than guess.

Should I check IP or domain?

Both. Some lists track domains, others track sending IPs.

Free tool

Blacklist checker

See if a domain or sending IP is listed on public email blocklists. Free, no sign-up.

Enter a domain to check domain blocklists, or your sending IP to check IP blocklists.

What it checks

What this tool checks

Three things, every time you run it.

01
Checks public blocklists
IPs against SpamCop, UCEPROTECT, PSBL, Mailspike and DroneBL. Domains against SURBL and URIBL.
02
Domain or IP
Enter your sending domain, or the IPv4 address your mail goes out from.
03
Shows where to delist
Each listing links to that list's removal page.

Results

How to read the result

Every result comes with a plain reason.

Not listed

Clean on every list we checked. The result names each one.

Listed

Receivers that use this list may block your mail. Fix the cause, then request removal.

No answer

The list didn't reply in time. Run the check again in a minute.

Checking more than a few?

Upload a CSV and verify every address with all six checks. Start with 200 free credits.

Start free Bulk verifier

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No sign-up needed for any of them.

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FAQ