stalwart Releases

This patch release adds IMAP header search mapping and Sieve spam status updates, along with numerous bug fixes for search, IMAP quota, JMAP changes, and AI API error handling.

Jan 19, 2026

This patch release adds Polish locale support contributed by the community and fixes various search backend issues including Meilisearch, PostgreSQL, and FoundationDB.

Dec 29, 2025

This patch release introduces OAuth device authorization endpoint and improves antispam logic, along with fixes for various search backends and JMAP/IMAP functionality.

Dec 22, 2025

This initial patch release of the v0.15.x series fixes database sanitization issues and prepares for data migration from v0.13.x.

Dec 17, 2025

Major version introducing a linear spam classifier, native database search, and performance improvements.

Dec 16, 2025

This release introduces temporal filtering capabilities across the Backend, JavaScript, and Python SDKs, enabling time-based memory retrieval. It also resolves several bugs in SDK filtering logic and type definitions.

Dec 12, 2025

Fixes critical path resolution errors for Claude Desktop integration and resolves backend build regressions. Includes enhancements to Valkey VectorStore and general updates to SDKs and IDE extensions.

Dec 6, 2025

Introduces standalone Python and JavaScript SDKs that provide full feature parity with the backend, supporting multi-sector memory and advanced cognitive features like decay and reflection.

Nov 23, 2025

Adds a Web UI for control, introduces a HYBRID Tier Performance Mode, and implements a Memory Compression Engine alongside a Decay system.

Nov 5, 2025

Update following v0.14.0 migration, adding autoconfig and removing HTTP STS preload.

Oct 28, 2025

Major version introducing JMAP support for Calendars, Contacts, File Storage, and Sharing.

Oct 22, 2025

Security patch addressing unbounded memory allocation in the IMAP parser.

Sep 30, 2025

This release focuses on bug fixes for iTIP, HTTP, IMAP, and CalDAV protocols, introduces CLI health checks, and updates WebDAV discovery. It includes breaking changes for users upgrading from v0.11.x or v0.12.x regarding message queue and MTA configuration.

Sep 9, 2025

This update adds support for DeSEC and OVH ACME DNS providers, along with the ability to send emails as group members. It also addresses several MTA, Sieve, and JMAP issues to improve stability and functionality.

Jul 28, 2025

A maintenance release that adds DigitalOcean ACME support and fixes critical migration bugs that caused high CPU usage. It also resolves parsing issues in MTA STS and JMAP sortOrder.

Jul 16, 2025

A major feature release introducing MTA queue enhancements, Danish locale support, and DKIM support for the CLI. It includes fixes for WebDAV shared resources, CalDAV iMIP messages, and LDAP placeholders.

Jul 15, 2025

This release expands file type support for the DefaultReader and introduces new environment variables for Ollama model configuration. It also includes a user interface improvement to automatically hide the Getting Started guide after it has been viewed.

Jul 14, 2025

This release introduces CalDAV Scheduling Extensions (RFC6368) and i18n support for calendaring events, alongside assisted shared resource discovery. It fixes WebDAV empty response errors and IMAP folder normalization.

Jun 26, 2025

Enhances LDAP authentication capabilities and adds MTA queue ID reporting. Fixes a critical DNSSEC CPU bug and WebDAV CTag issues to ensure iOS synchronization works correctly.

Jun 3, 2025

A security and stability focused release that fixes XML injection vulnerabilities and macro replacement issues in configuration files. It also resolves nested CalDAV/CardDAV property tags.

May 30, 2025