2025
- January 6 - Goodbye Spam: Introducing Faster, Smarter Spam Filtering
- January 31 - OpenID Connect Integration is now Open Source
- March 21 - Stalwart Receives NLNet Grant to Build Collaboration Server
- May 26 - Introducing Calendars, Contacts and Files in Stalwart
- June 20 - The Future of Stalwart: Webmail, Roadmap, and Beyond
- July 15 - Introducing Virtual Queues and Strategy-Driven Delivery in Stalwart MTA
- August 11 - Stalwart Joins GitHub's Open Source Secure Fund
- October 7 - Security at the Core: Stalwart completes Second Security Audit
- October 22 - JMAP for Calendars, Contacts and Files now in Stalwart
- December 16 - Marginal Gains: Major Impact
2024
- January 2 - SMTP Smuggling: What it is and how Stalwart is protected
- January 7 - ACME Integration for Effortless TLS Certificates
- January 14 - Increase your mail server security with Fail2ban
- February 14 - Introducing Distributed SMTP Queues & Expressions
- April 9 - Goodbye SSH: Discover Stalwart's Web-Based Admin Interface
- April 17 - Introducing DNS-01 and HTTP-01 ACME Challenges
- May 13 - Unlock Seamless Scalability with Stalwart Mail Server
- May 18 - Addressing the Overlooked DKIM Exploit in Stalwart Mail Server
- June 7 - Stalwart Unaffected by OOM Exploit Affecting Cyrus IMAP
- June 22 - Introducing Webhooks and MTA Hooks
- July 1 - Enhanced E-mail Security with Two-Factor Authentication
- July 23 - Stalwart and Nextcloud Join Forces
- August 8 - Boost Your Insights with Advanced Telemetry
- August 29 - Announcing Dashboards and Strengthened Security
- September 21 - Unlock Multi-Tenancy, Branding, and Fine-Grained Control
- October 2 - OpenID Connect - Secure Authentication Just Got Easier
- October 7 - Revolutionize Your Email Workflow with AI
- December 4 - Diagnose and Resolve Email Issues Faster
2023
- March 2 - Announcing Stalwart SMTP with DMARC, DANE, MTA-STS support
- March 3 - Stalwart Mail Server is awarded a grant from NLnet NGI0 Entrust Fund
- July 17 - Announcing Stalwart Mail Server: unified, efficient, and more powerful than ever!
- July 22 - Introducing Milter Support to Stalwart SMTP
- July 28 - Unleashing Email Flexibility: Address Rewriting is now available
- August 3 - Introducing Encryption at Rest: Protecting Your Emails Even When They Sleep
- August 29 - Advanced Filtering with Sieve Expressions
- October 7 - Stalwart Mail Server passes Security Audit
- October 25 - Introducing Advanced Spam and Phishing Filtering
- December 27 - Elevating Performance and Flexibility
2022
- January 25 - Building E-mail messages in Rust
- May 30 - Sending DKIM signed e-mail messages over SMTP in Rust
- September 20 - Announcing Stalwart JMAP server
- October 21 - Sieve filter interpreter for Rust
- October 31 - Sieve filters are now available on Stalwart JMAP v0.2
- December 1 - DKIM, ARC, SPF and DMARC authentication in Rust