In today's digital age, the safety and authenticity of your emails are paramount. With that in mind, we're happy to announce the release of the Spam and Phishing filter in Stalwart Mail Server v0.4.0. This release is packed with features that not only enhance your email security but also ensure a seamless communication experience.

Here's a deep dive into what's new:

• Comprehensive Filtering Rules: We've crafted a set of rules that stand shoulder-to-shoulder with the best solutions out there.
• Statistical Spam Classifier: Empower your server with a classifier that constantly learns, adapts, and keeps spam at bay.
• DNS Blocklists (DNSBLs): Safeguard your users' inboxes from notorious spammers through meticulous checks on IP addresses, domains, and hashes.
• Collaborative Digest-Based Filtering: By integrating digest-based spam filtering, we ensure even greater accuracy in weeding out unwanted emails.
• Phishing Protection: Defend against cunning phishing tactics, from homographic URL attacks to deceptive sender spoofing.
• Trusted Replies Tracking: By recognizing and prioritizing genuine replies, we ensure your genuine conversations remain uninterrupted.
• Sender Reputation: An automated system that assesses sender credibility based on their IP, ASN, domain, and email address.
• Greylisting: An added shield against spam, by temporarily holding back unfamiliar senders.
• Spam Traps: Crafty decoy email addresses that help us catch and scrutinize spam, ensuring your users' inboxes remain clutter-free.
• Built-in & Ready to Roll: No dependency on third-party software. Unbox and deploy – it's that simple!

We are thrilled to announce that Stalwart Mail Server has undergone a comprehensive security audit conducted by Radically Open Security. As a part of their assessment, a crystal-box penetration test was performed to ensure the robustness and security of the mail server.

Today we are announcing the latest release of Stalwart Mail Server: version 0.3.6. This update includes multiple enhancements to the Sieve filtering language, including the ability to evaluate arithmetical and logical expressions, and fetch data from SQL or LDAP databases to Sieve variables.

In the digital age where privacy and data protection are paramount, we continually strive to enhance the security features offered by Stalwart Mail Server. Today, we're thrilled to announce our latest upgrade – Encryption at Rest!

Stalwart Mail Server continues its tradition of constant innovation and advancement with the release of version 0.3.2. Address rewriting has always been a highly requested feature, and we've delivered in a big way. The 0.3.2 update introduces sender and recipient address rewriting using both regular expressions and Sieve scripts. This means you now have the ability to manipulate and manage email addresses like never before, providing unparalleled flexibility in routing your emails.

E-mail filtering is a crucial part of any modern mail server and, for this reason, we're excited to announce the addition of Milter support to Stalwart Mail Server. This update, driven by user feedback, allows the integration of both new and old Milter filters, supporting versions 2 and 6, which expands the server's capabilities in inspecting, filtering, or modifying emails during processing.

We're thrilled to announce the release of Stalwart Mail Server, our biggest leap forward yet. This version combines the powerful capabilities of Stalwart JMAP, Stalwart IMAP, and Stalwart SMTP servers into one easy-to-install binary, offering you a unified, highly efficient mail server solution.

We’re excited to announce that Stalwart Labs has received a grant from the NGI0 Entrust Fund. This fund, established by NLnet with financial support from the European Commission’s Next Generation Internet programme, aims to support the development of innovative and secure technologies for the internet of the future.

It’s official! We are proud to announce the release of Stalwart SMTP, the next-generation email server solution written in Rust for businesses, organizations, and individuals alike.

Today the mail-auth library was released, which is an e-mail authentication and reporting library written in Rust that supports the DKIM, ARC, SPF and DMARC protocols. It is the Rust equivalent of OpenDKIM, OpenSPF, OpenARC and OpenDMARC combined in one library (as well as some extras such ARF support). mail-auth includes the following features:

• DomainKeys Identified Mail (DKIM):
• ED25519-SHA256 (Edwards-Curve Digital Signature Algorithm), RSA-SHA256 and RSA-SHA1 signing and verification.
• DKIM Authorized Third-Party Signatures.
• DKIM failure reporting using the Abuse Reporting Format.
• Authenticated Received Chain (ARC):
• ED25519-SHA256 (Edwards-Curve Digital Signature Algorithm), RSA-SHA256 and RSA-SHA1 chain verification.
• ARC sealing.
• Sender Policy Framework (SPF):
• Policy evaluation.
• SPF failure reporting using the Abuse Reporting Format.
• Domain-based Message Authentication, Reporting, and Conformance (DMARC):
• Policy evaluation.
• DMARC aggregate report parsing and generation.
• Abuse Reporting Format (ARF):
• Abuse and Authentication failure reporting.
• Feedback report parsing and generation.