💡 Pick it for maximum ecosystem maturity and compatibility with established Unix mail-server deployments.
SpamAssassin is a powerful and popular open-source spam filter that uses a variety of spam-detection techniques.
Best Rspamd Alternatives ranked by AI · updated Aug 2026
Rspamd is an open-source, high-performance spam filtering system for mail servers and hosting providers. It combines statistical analysis, reputation data, antivirus integration, and configurable Lua rules with a web interface and HTTP API.
Top 6 Rspamd alternatives
💡 Pick it when you want a supported, full-featured mail gateway with quarantine and centralized administration.
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
💡 Pick it for broad MTA and antivirus integration in a traditional self-hosted mail environment.
MailScanner is a highly respected open-source email security system design for Linux-based email gateways.
4
💡 Pick it when you want enterprise email protection without running and tuning your own filtering infrastructure.
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
5
Sophos Email
Sophos
💡 Pick it for managed protection and straightforward integration with Sophos Central or Microsoft 365 environments.
Sophos Email is a cloud-managed email security service for businesses using Microsoft 365, Google Workspace, or hosted mail infrastructure. It provides anti-spam,...
Pros
- Simpler deployment and maintenance than self-hosted Rspamd
- Strong integration with Sophos Central and broader security products
- Provides managed anti-phishing and impersonation controls
Cons
- Less flexible than Rspamd for custom rules and local processing
- Requires a commercial subscription and vendor dependency
- Advanced controls may depend on plan or ecosystem integration
Custom quote
6
SpamHero
SpamHero
💡 Pick it for a low-maintenance hosted filter when you do not want to administer a mail-security stack.
SpamHero is a hosted email filtering service that removes spam, malware, and phishing messages before delivery. It is designed for small businesses...
Pros
- Much easier to deploy than Rspamd for small organizations
- Includes hosted quarantine and filtering without server maintenance
- Supports custom allowlists, blocklists, and filtering policies
Cons
- Fewer deep customization and scripting options than Rspamd
- Adds recurring cost where Rspamd can run for free
- Dependent on a third-party service and mail-routing changes
From $9.98/mo
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