Free tool
Free email blacklist checker
Type your sending IP address or your domain, then open each blacklist's own page to see whether you are listed. Below: what each list means, how to get delisted, and when a listing matters for outreach.
SendPath does not look anything up for you: each button opens that list’s own page, which tells you whether you are listed and how to ask for removal. What you type here stays in your browser. Lists change their rules, so if a page does not take the address, paste it in yourself.
How to check if you are blacklisted
- Find what to check. For email you send from your own server or a sending service, that is the sending IP address (in a received message’s headers, under Received). For mail through Google Workspace or Microsoft 365 the IP is theirs: check your domain.
- Type the IP address or domain above and open each list’s page.
- If a list says you are listed, read its reason and its removal steps before you do anything else.
What each list means
| List | What it records | How much it matters |
|---|---|---|
| Spamhaus (ZEN and DBL) | ZEN combines lists of spam sources, hijacked machines and ranges that should not send mail directly. DBL lists domains used in spam. | The one most receivers use: a listing here can block mail widely. |
| Barracuda | IP addresses its reputation system flags. | Matters mainly for recipients behind Barracuda email security. |
| SpamCop | IP addresses that people reported as spam sources. | Listings usually clear on their own when the reports stop. |
| UCEPROTECT | Level 1 lists single IP addresses seen sending to its spam traps; higher levels list whole networks. | Many large receivers do not use it. |
| Mailspike | IP addresses by reputation. | Used by some receivers as one signal among several. |
| PSBL | IP addresses that sent to its spam traps. | Used by some smaller receivers. |
| SURBL and URIBL | Domains found in the links of spam messages. | Filters use them to judge the links in a message, not the sender. |
How to get delisted
- Stop sending from that IP address or domain until you know why.
- Find the cause. The usual ones are a compromised mailbox, a list with bad addresses, a sudden jump in volume from a new mailbox, or a missing SPF, DKIM or DMARC record. Why emails go to spam goes through each in order.
- Fix it. Remove the bad addresses, secure the account, slow down, or add the missing record.
- Ask for removal on the list’s own page (the button above opens it). Each list has its own process, and some listings expire on their own.
- Check again after a day or two. If you are listed again, the cause is not fixed yet.
When a listing matters for outreach
- It matters when the receiver uses that list. A Spamhaus listing can stop mail from reaching many companies; a listing on a rarely used list may cost you nothing.
- It matters more than your content when it is the cause. If mail to one company bounces with a message naming a list, that list is the first thing to check.
- It is a symptom. Being listed usually means something upstream went wrong: the list, the account or the volume. Fix that first.
- Check your setup too. The free domain check and the SPF checker show whether your own records are in order, and the email verifier checks addresses before you send.
No tool, including this one, can promise inbox placement: a clean result on every list means one common problem is ruled out, not that your mail will be delivered.
FAQ
Questions, answered
What is an email blacklist?+
A public list of IP addresses or domains that email providers have seen sending spam or abuse. Receiving mail servers can look up a sender on these lists and treat mail from a listed one with suspicion, or refuse it. Different lists record different things, and each receiver chooses which ones to use.
How do I check if my IP address or domain is blacklisted?+
Type your sending IP address or your domain in the box above, then open each list's own page with the buttons. That page tells you whether you are listed. If you send through Google Workspace or Microsoft 365, the sending IP address is theirs, so check your domain and your authentication records instead.
Does being on a blacklist mean my emails go to spam?+
Not automatically. Many receivers use only some lists, and large inbox providers mainly use their own reputation systems. A listing on a list the receiver uses can send your mail to spam or get it refused; a listing on a rarely used list may change nothing. Spamhaus is the one most receivers take seriously.
How do I get off an email blacklist?+
Stop sending, find out why you were listed (a compromised mailbox, a bad list, a sudden jump in volume), fix that, then ask for removal on the list's own page. Some listings expire on their own once the cause stops. Asking for removal without fixing the cause usually gets you listed again.
Does SendPath look up the lists for me?+
No. This page does not query any list: each button opens that list's own lookup page, and what you type stays in your browser. We link to them because that keeps the answer current and under each list's own rules.
Is this blacklist checker free?+
Yes, with no sign-up. Each list may have its own limits on how often you can look things up.
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