Domain icon

Get involved and help us fight Spam

Point your unused domain mx records to, a free service that allows professionals working at ISPs and security companies to see unsolicited email communications and thus fight internet abuse.

Talk To Us Documentation

Trusted by

Swisscom logo White Mimecast Logo Stackpath Logo Logo of KPN white Vodafone Logo

What is it? is a free crowdsourced service to help professionals in fighting spam. By pointing your unused domains to the blackhole systems, you are part of the community which allows the professionals working at service providers and security companies to fight spam much more effectively by letting them know what’s unsolicited email communication.

Get involved and help us fight spam

What happens with your domains if you use your domains only for http (or other services) but not for email? will help you from being spammed in the future and will be able to analyze the unwanted email traffic to fight spam efficiently.
You can point your domains to and switch back at any time. You keep full control over your domains. We accept all kinds of domains – each additional domain helps making more effective.

How it works

We do not intend to burn or spoil the reputation of domains – we use them to receive from and to respond to people sending unsolicited emails.

If you point your domain to the systems, the email traffic sent to recipients of this domain will usually receive a 550 hard bounce code from the mail server, which means there is no email service currently in operation for the recipients.

Emails will only be accepted for some recipients if we are sure that the original sender of the email takes care and will take action to avoid sending spam in the future. Thus your domain can be used for a real email service later or at any time again.

Let us know

If you have pointed your domain(s) to the system, please let us know – so that we have the chance to immediately react and scale the system properly.

Important: If you plan to point a whole domain portfolio to our systems, it will be necessary to inform us before doing so, so that we can take the necessary steps on our side!

Please contact us via email at or via our contact form.

Two computer monitors showing AbuseHQ

Make a Suggestion

You're thinking about a tool or service that we didn't list yet? Awesome – get in touch – we'd love to hear about it!

Talk to us

Resources & Insights

Products & Tools