We're excited to announce that Stalwart has been selected to participate in Session 2 of GitHub's Open Source Secure Fund (OSSF), a prestigious program designed to enhance security across the open source ecosystem. This recognition represents not only an acknowledgment of Stalwart's growing importance in the email infrastructure space but also our commitment to maintaining the highest security standards.| Stalwart Labs Blog
At Stalwart Labs, we're constantly working to evolve and improve our software based on real-world feedback. Today, we're excited to announce a major enhancement to the queueing system in Stalwart MTA, designed to meet the needs of some of our busiest users—those delivering millions of messages per day.| Stalwart Labs Blog
Since we officially started developing Stalwart on September 4th, 2021, we've come a long way in establishing a powerful and versatile open-source mail and collaboration server. The very first commit, made on October 3rd, 2021, was to the mail-parser Rust crate, a fundamental component upon which Stalwart was built. It set the tone for our relentless pursuit of secure, reliable, and performant software.| Stalwart Labs Blog
We’re excited to announce the release of Stalwart v0.12, a significant milestone that evolves Stalwart from a powerful mail server into a complete, integrated communication and collaboration platform. This release delivers one of the most anticipated features from our community: native support for calendars, contacts, and file storage—all built directly into the server, with no need for third-party integrations.| stalw.art
We’re happy to announce that Stalwart Labs has been awarded a new grant from the NGI0 Core Fund, established by NLnet with financial support from the European Commission’s Next Generation Internet programme. This funding will support the development of essential collaboration features, marking a major milestone in Stalwart’s evolution from a modern email server into a complete, self-hosted collaboration platform.| Stalwart Labs Blog
We are happy to announce that third-party OpenID Connect (OIDC) authentication support has now been open-sourced under the AGPL-3.0 license in Stalwart Mail Server version 0.11.5. This means that users can now configure Stalwart Mail Server to authenticate against external OIDC providers, such as Keycloak, without requiring an Enterprise subscription.| Stalwart Labs Blog
As we step into 2025, we're excited to share some significant enhancements to Stalwart Mail Server version 0.11.0, starting with a complete overhaul of its built-in spam filter. These changes bring dramatic improvements in speed, ease of use, and flexibility while addressing feedback from our community. Here’s a closer look at what’s new.| stalw.art
Today we are announcing the release of Stalwart Mail Server version 0.10.7, an update that brings two of the most requested features from our users: robust troubleshooting tools and support for external recipients on mailing lists. This update also introduces the ability to store emails and blobs on Azure Blob Storage, alongside several minor fixes and improvements. As always, this release reflects our commitment to implementing the features most requested by our community.| stalw.art
We are happy to announce the release of Stalwart Mail Server v0.10.3, which introduces support for AI models —a powerful new feature now available to Enterprise Edition users as well as our GitHub and OpenCollective sponsors. With this feature, Stalwart Mail Server can be integrated with both self-hosted and cloud-based Large Language Models (LLMs), bringing advanced email processing capabilities like never before.| Stalwart Labs Blog
Today we announce the release of Stalwart Mail Server v0.10.2, and it’s a big one! This version brings full OpenID Connect (OIDC) support, empowering admins and developers to integrate secure authentication and single sign-on (SSO) with modern identity providers. In addition to OIDC, this release introduces OpenID Connect Dynamic Client Registration, OpenID Connect Discovery, and OAuth 2.0 Token Introspection. Let’s dive into what these features are and why they matter.| stalw.art
We are happy to announce that Stalwart Mail Server 0.10.0 is officially here! This latest release brings some exciting new features to help you manage your email infrastructure more effectively. With multi-tenancy, branding, and a robust roles and permissions system, Stalwart is more powerful and flexible than ever before. Let’s dive into what’s new in this release!| Stalwart Labs Blog
We're excited to announce the release of Stalwart Mail Server version 0.9.3! Whether you're using the Community or Enterprise version of Stalwart Mail Server, this update brings powerful new features to enhance your email infrastructure's security, performance, and monitoring capabilities. Let's dive into what's new:| stalw.art
We are thrilled to announce the release of Stalwart Mail Server version 0.9.1, which comes packed with significant enhancements to our telemetry capabilities. This release marks a major milestone in our ongoing efforts to provide robust and efficient monitoring and logging solutions, ensuring our users can achieve optimal server performance and reliability.| stalw.art
We are excited to announce a partnership between Stalwart Labs and Nextcloud, bringing together our state-of-the-art Stalwart Mail Server with the comprehensive Nextcloud suite. This collaboration marks a significant step forward in enhancing productivity, security, and user experience for our customers.| stalw.art
We are happy to announce the release of Stalwart Mail Server 0.8.3! This latest version introduces two powerful security features: Two-Factor Authentication (2FA) with TOTP codes and Application Passwords. These additions are designed to enhance the security of your email accounts, providing robust protection against unauthorized access.| stalw.art
We are happy to announce the release of Stalwart Mail Server version 0.8.2, an update that brings powerful new features designed to enhance the flexibility and responsiveness of your email infrastructure. The highlight of this release is the introduction of Webhooks and MTA Hooks, two significant additions that offer greater control and automation for email processing.| stalw.art
We are pleased to announce that Stalwart Mail Server is not vulnerable to the recently disclosed CVE-2024-34055 exploit, which affects Cyrus IMAP versions before 3.8.3 and 3.10.x before 3.10.0-rc1. This vulnerability allows authenticated attackers to cause unbounded memory allocation, potentially leading to a server crash through an Out-Of-Memory (OOM) condition.| stalw.art
Email security is a critical aspect of digital communication, especially given the rising sophistication of cyber threats. DomainKeys Identified Mail (DKIM) and Authenticated Received Chain (ARC) are standards designed to ensure the authenticity and integrity of emails. However, as discovered by analysts at Zone.eu, vulnerabilities in the DKIM standard could undermine these protections, affecting billions of users worldwide.| stalw.art
We are excited to announce the release of Stalwart Mail Server v0.8.0, a significant update that introduces powerful new features and enhancements designed to improve performance, scalability, and ease of use. This release marks a major step forward in our commitment to providing a robust and highly available email server solution for businesses and organizations of all sizes.| stalw.art
Today we announce the release of Stalwart Mail Server version 0.7.2, which now includes support for both DNS-01 and HTTP-01 ACME challenge types. This update marks a significant enhancement in our server's capabilities, addressing one of the most frequent requests from our user community—the inclusion of DNS-01 support for improved domain validation flexibility.| stalw.art
We're thrilled to announce the release of Stalwart Mail Server version 0.7.0, a significant update that brings a wealth of features and improvements to enhance the performance and manageability of your email services. This release marks a pivotal moment in our journey to provide an email server solution that combines ease of use with robust performance, ensuring that your email infrastructure is both secure and efficient.| stalw.art
This Valentine's Day, we're not just celebrating love and companionship; we're also celebrating the groundbreaking advancements in the Stalwart Mail Server with the release of version 0.6.0. In a world where reliability and flexibility in mail server management are more critical than ever, Stalwart Mail Server takes a significant leap forward with the introduction of distributed SMTP queues and the integration of expressions in configuration files. Let's delve into how these features transfor...| stalw.art
We are excited to announce a significant update to Stalwart Mail Server - the introduction of an integrated fail2ban-like system in our latest version, 0.5.3. This new feature marks an important advancement in our ongoing commitment to providing robust security measures for our users.| stalw.art
ACME (Automatic Certificate Management Environment) represents a breakthrough in managing TLS (Transport Layer Security) certificates. This protocol automates the process of obtaining, installing, and renewing TLS/SSL certificates, which are crucial for securing network communications. TLS certificates provide authentication and encryption, ensuring that data transferred between users and servers remains private and secure.| stalw.art
In the world of email security, a recent concern has arisen known as SMTP Smuggling, a vulnerability that can be exploited to spoof emails. This blog post will explain what SMTP smuggling is and how Stalwart Mail Server is designed to be immune to this vulnerability. We'll also discuss a new feature we've implemented to protect other servers that might be vulnerable.| stalw.art
We are excited to announce the release of Stalwart Mail Server v0.5.0. As we approach the end of the year, this significant update marks a major advancement in our journey to provide a robust, efficient, and versatile mail server solution. This latest version incorporates a range of performance enhancements, storage layer improvements, and new features, designed to elevate your email server experience.| stalw.art
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.| stalw.art
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.| stalw.art
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!| stalw.art
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.| stalw.art
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.| stalw.art
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:| stalw.art
Sieve is a language that can be used to create filters for electronic mail. It is not tied to any particular operating system or mail architecture. It requires the use of RFC 822-compliant messages, but otherwise should generalize to other systems that meet these criteria.| stalw.art
We are happy to announce Stalwart JMAP, an open-source JSON Meta Application Protocol server written in Rust that aims to be scalable, robust and secure.| stalw.art
Building and sending e-mails securely does not have to be complicated. Today the mail-send crate was released including the following features:| stalw.art
Back in November we released mail-parser, a Rust library to parse MIME e-mail messages of any complexity. Today we are proud to announce the release of mail-builder, a simple yet powerful library to build RFC5322 e-mail messages with MIME support.| stalw.art
Today we released mail-parser, an e-mail parsing library written in Rust that fully conforms to the Internet Message Format standard (RFC 5322), the Multipurpose Internet Mail Extensions (MIME; RFC 2045–2049) as well as other internet messaging RFCs.| stalw.art
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.| stalw.art
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 the 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.| stalw.art
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.| stalw.art
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.| stalw.art
Sieve (RFC5228) is a scripting language for filtering email messages at or around the time of final delivery. It is suitable for running on a mail server where users may not be allowed to execute arbitrary programs as it has no user-controlled loops or the ability to run external programs. Sieve is a data-driven programming language, similar to earlier email filtering languages such as procmail and maildrop, and earlier line-oriented languages such as sed and AWK: it specifies conditions to m...| stalw.art
