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SpamHaus Review 2026

Outreach & Sequences·Email Deliverability & Warmup·freemiumFree tierCore GTM

Strengthening trust and safety across the internet

What is SpamHaus?

Spamhaus Project is an authority on IP and domain reputation, providing intelligence to detect malicious activity across the internet. It offers blocklists, reputation data, and DNS firewall datasets.

Best for

Mixed

Use cases

  • spam blocking
  • network protection
  • threat intelligence

Key features

real-time DNS blocklists
DNS response policy zones
IP and domain intelligence API
botnet controller list

Pricing

Model
freemium
Price range
Free datasets and tools plus commercial datasets
Free tier
Yes

Team behind SpamHaus

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