SpamAssassin is a powerful and popular open-source spam filter that uses a variety of spam-detection techniques.
Best SpamHero Alternatives ranked by AI · updated Aug 2026
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SpamHero is a hosted email filtering service that removes spam, malware, and phishing messages before delivery. It is designed for small businesses and domain administrators who want a simpler alternative to operating a mail-filtering server.
Top 6 SpamHero alternatives
MailScanner is a highly respected open-source email security system design for Linux-based email gateways.
Proxmox Mail Gateway is a mail security solution for spam and virus filtering. It provides an easy-to-use web-based interface with quarantine, reports,...
Starting at $249/year
Rspamd is an open-source, high-performance spam filtering system for mail servers and hosting providers. It combines statistical analysis, reputation data, antivirus integration,...
Pros
- Faster and more resource-efficient than many traditional content filters
- Strong Bayesian, reputation, DKIM, DMARC, and fuzzy-checking capabilities
- Flexible Lua scripting and HTTP API support advanced mail workflows
Cons
- More complex to configure than hosted spam-filtering services
- Requires mail-server administration and ongoing rule tuning
- Smaller ecosystem and less legacy documentation than SpamAssassin
Free, open source
Websense Email Security was an enterprise email security platform for filtering spam, malware, phishing, and other inbound and outbound email threats. The...
Pros
- Provided centralized filtering for enterprise inbound and outbound email
- Combined anti-spam, anti-malware, and data-loss prevention controls
- Supported policy-based administration for large organizations
Cons
- Websense branding has been replaced by Forcepoint
- Legacy deployments may require migration or vendor support validation
- Less cloud-native than newer email security platforms
6
Mimecast offers email security and archiving solutions with a focus on protecting against advanced threats and ensuring data resilience.
Pros
- Advanced threat protection
- Data resilience features
Cons
- Pricing may vary based on feature set
Contact for pricing
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