Powerful Open Source Spam Filtering
Rspamd provides state-of-the-art spam protection with a focus on performance, flexibility and ease of use. Leveraging AI, machine learning, and advanced analytics for comprehensive email security.
Advanced Protection
Multi-layered filtering including SPF, DKIM, DMARC validation, URL black lists, pattern detection, and machine learning techniques.
AI & LLM Integration
Leverage Large Language Models and AI for advanced spam detection, content analysis, and intelligent filtering decisions.
High Performance
Written in C with event-driven architecture, achieving processing rates of hundreds of messages per second using modest hardware.
Advanced Analytics
Powerful data analysis with ClickHouse and Elasticsearch integration for deep insights into email patterns and threats.
Easy Integration
Works with major MTAs including Postfix, Exim, Sendmail and has native support in many mail server solutions.
Web Interface
User-friendly web interface for monitoring, configuration and checking message status in real time.
Machine Learning
Advanced neural networks and statistical analysis for adaptive spam detection that improves over time.
Extensible Architecture
Modular design with plugin support and Lua scripting for creating custom rules and integrations.
Comprehensive Documentation
Detailed user guides, configuration examples, and development resources to help you get the most out of Rspamd.
Community-Driven Development
Rspamd is 100% free and open source software released under the Apache 2.0 license. Join our community of contributors and users helping to make email safer for everyone.
Powerful Core Features
Benefit from years of development with comprehensive spam filtering capabilities, including content analysis, RBLs, SPF, DKIM, DMARC, and much more.
ClickHouse & Redis Integration
Store and analyze large volumes of email metadata using ClickHouse integration, and benefit from high-performance Redis backend for caching and data storage.
Web Interface & Advanced Tooling
Manage your installation through an intuitive web interface and leverage advanced tooling for configuration, monitoring, and fine-tuning of spam filtering rules.
Antivirus Engine Support
Seamlessly integrate with popular antivirus engines to enhance email security and detect malicious attachments before they reach users' inboxes.
Personal Settings & Customization
Tailor Rspamd to your specific needs with extensive personalization options, custom rules, and per-user settings for optimal filtering performance.
Project Statistics
Rspamd is regularly updated with the latest spam-fighting techniques and security patches. The project is driven by both community contributions and professional developers.
Rspamd Pro for Organizations
For organizations that need dedicated support, enhanced features, and service level agreements, we offer Rspamd Pro - our premium commercial offering.
Enterprise Support
- 24/7 technical support
- Guaranteed response times
- Priority bug fixes
- Direct access to experts
Premium Features
- Enhanced rule sets
- Custom integration assistance
- Configuration review
- Deployment consultation
Enterprise Security
- Advanced reporting & analytics
- SLA guarantees
- Early security updates
- Custom rule development
Commercial Support Features
By using the commercial support, you directly sponsor and encourage Rspamd development as an Open Source project. You get priority support, SLA options, and access to exclusive features.
Premium Fuzzy Storage Access
- No volume restrictions within agreed volumes
- Extra hashes storage (twice more hashes)
- Extended retention time
- More geographical locations (less latency)
- No hashes delay - immediate access to fresh fuzzy hashes
Additional Fuzzy Lists
- Exclusive supplementary list of fuzzy hashes
- Carefully curated for high hit rates
- Exceptionally low false positive rate
- Outperforms default list by 2-3 times
- Exclusive access for commercial subscribers
Extra Support & Consulting
- Priority support with faster response times
- Custom feature development (separate agreement)
- Consultancy for configuring effective anti-spam solutions
- Best practices and configuration guidance
- Training and webinars
Rsync Support for List Data
- Access to DNS lists through rsync protocol
- Maintain DNS lists within your own infrastructure
- Greater control over list data
- Improved performance for local deployments
- Reduced external dependencies
Trusted by Security-Conscious Organizations
See why IT security leaders choose Rspamd Pro for their critical email infrastructure.
"Beyond the Rspamd's performance can be only compared with some extremely expensive brands available on the market, it has a bunch of powerful features and algorithms that constitute an amazing tool against Spam and other email abuses. Rspamd is broadly customizable and allows multiple strategies to avoid Spam and false positives. In conclusion, Rspamd team is not only giving an incredible support for Locaweb but it has also been a great partner."
Rafael Abdo
Computer Security Incident Coordinator, Locaweb
Ready to Secure Your Email Infrastructure?
Join thousands of organizations already protecting their communications with Rspamd. Get started today with our free open source solution.