Overview
SpamCop was founded by Julian Haight in 1998, later acquired by Cisco, and is now maintained by the Cisco Talos intelligence team. Unlike other blacklists, SpamCop runs entirely on user reports β users submit spam they've received, and the system automatically analyzes the source IP.
Because it relies on user reports, SpamCop's list updates very quickly, but this also means occasional false positives. A mass marketing email that gets reported by a few recipients can briefly land the sender's IP on the list.
How It Works
Users submit spam samples through SpamCop's website or email forwarding feature. The system parses email headers, extracts the source IP, and scores it based on report volume and frequency. IPs exceeding the threshold get listed.
Scores decay over time β with no new reports, listings typically expire within 24-48 hours. More reports over a longer period means slower decay.
How to Get Delisted
SpamCop has no manual removal process. The only way out is to stop triggering reports and wait for the system to automatically remove your listing. This usually takes no more than 48 hours.
If you're a legitimate sender, clean your mailing list of invalid addresses and recipients who didn't opt in β this reduces the chance of users hitting the report button.
This blacklist does not support manual removal. Listings expire automatically once the underlying issue is resolved.