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Think differently

You forward and report spam - and the professionals will know how to fight it more efficiently

Get involved and let's help each other in fighting spam is a free crowdsourcing-based service to help professionals in fighting spam.
No matter how you help reporting spam, either by pointing your unused domains to the blackhole systems, or by using the Thunderbird plugin to report directly from your Thunderbird email client, you are part of the community which helps the professionals working at ISPs and security companies to fight spam much more effectively by letting them know what's unsolicited email communication.

Thunderbird Addon

Report spam from your email client

Download Addon

Install the Thunderbird Addon and report directly

The Thunderbird Addon - you can use to report spam, or newsletters you don't want anymore, directly from your own email client - is available on the Thunderbird add-ons website. With just one click you are able to forward and report a received spam message to the systems.

Either download the abusix Spam Reporter directly from the Thunderbird Addons website, or search for it in the Addons Manager in Thunderbird and install instantly from there.

Notice Privacy information: When you forward and report a spam message with the Thunderbird plugin to the system only the headers of the orginal spam email are forwarded. Furthermore, information like recipients' email addresses in the "To:", "Delivered-To:" and "X-Original-To:" will be anonymized.

Roundcube Plugin

A Roundcube webmail client plugin by Tralios

Implement a report spam button in your Roundcube installation

There is a Roundcube webmail client plugin available which implements a report spam button. It is customizable and can be downloaded from the Tralios github repository.

Notice Please get in touch with us to obtain an API key for the plugin!

Activate your domain(s)

Make your unused domain(s) a spam reporting tool

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 we will be able to analyse the unwanted email traffic to efficiently fight spam.
You can point your domains to and switch back at any time, you keep the 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 just use them to receive from and to respond to people sending unsolicited emails.
If you point your domain to the systems the email traffic which is sent to recipients of this domain will usually receive a 550 hard bounce code from the mail server, which actually 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.

How to participate

Warning It is very important to know, that the domains you point via MX record to the services are currently not used for any email traffic or communication by yourself. Usually this is a domain you only utilize for a website URL, but definitely not for email addresses.

Just point your domain to the systems with a so-called DNS MX record, e.g. in a BIND zone file:

yourdomain.tld.     IN     MX     10

Many ISPs and Domain Registrars offer convenient customer web interfaces to perform this task. And, you may change the MX record for your domain(s) at any time!

Important Please see the disclaimer at the end of this website. We assume, that you wouldn't want to receive email traffic for your domain, anyway or anymore. If there is still traffic coming in from a former email domain usage, we assume you don't want it either and don't care. Please follow the abusix Twitter account to be informed about changes and enhancements which might be implemented in the future.


We let you know

Some statistics and other numbers

Spacetime is a statistics frontend for the data received by, the galactic spam reporting center from abusix. In Spacetime you are able to review data send to your domain received by our SMTP servers. If you help fighting spam by reporting emails via our Thunderbird add-on, you can overlook all your commited reports.

Let us know!

We do care

How to get in touch

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 systems 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

Feedback form

Please submit your feedback and any other suggestions by using our feedback form.