Cleanmail vs Rspamd

Cleanmail is Alinto’s email security relay for filtering unwanted and malicious messages. Alinto says it eliminates 99,9% of spam messages and email viruses, and protects against scams, phishing, spoofing, malware, and ransomware. An outbound scanner checks outgoing mail to help prevent server misuse and domain or IP blocklisting. Administrators can manage allowlists and blocklists at the domain and individual-user levels. The control panel provides real-time tracking, analytics, and log files, with self-service log access using the ELK stack. If the standard messaging service is unavailable, an emergency webmail interface provides another way to access email. Cleanmail can archive non-modifiable copies of incoming and outgoing mail, including attachments, for up to 10 years, subject to business rules and legal requirements. Alinto describes it as compatible with professional mail servers and says it does not require changes to existing infrastructure. Deployment choices include SaaS, cloud, and on-premises options, including dedicated platforms and customer-selected private or public clouds. Alinto says its private cloud is hosted in the EU, France, Switzerland, or another country according to customer requirements. Pricing is on request, and a free trial is available.

Rspamd is an email security engine for filtering phishing, business email compromise, malicious attachments, and spam. It scores messages using reputation, sender authentication, content analysis, and machine learning. Authentication checks cover SPF, DKIM, DMARC, and ARC; malware scanning can use ClamAV or commercial antivirus engines. Administrators can define custom rules through the Lua API and configurable maps and selectors. Rspamd works with mail transfer agents including Postfix, Exim, and Sendmail, and its ClickHouse and Elasticsearch integrations provide visibility into attack patterns and detection rates. It is designed for gateway deployment and can run on-premises, keeping message data in the operator's environment without a mandatory vendor cloud. The detection engine is open source under Apache 2.0 and is available for Linux, macOS, and self-hosted use. Rspamd says its event-driven C core scans hundreds of messages per second per core and can scale from a single server to billions of messages a day. The open-source engine is listed at free. Scale costs £100 a month, with 5K mailboxes; hosted and enterprise plans have custom pricing. Premium plans offer support from core engineers, with enterprise SLA options.