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stalwart
Communication & Email
Open‑source, secure mail & collaboration server supporting IMAP, JMAP, SMTP, CalDAV, CardDAV and WebDAV
Rust
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Latest v0.16.14 · 6d ago
Security brief →
Features
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Full email protocol suite: JMAP (mail, Sieve), IMAP4rev2, POP3, SMTP with DMARC, DKIM, SPF, ARC and advanced routing
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Collaboration services: CalDAV scheduling, CardDAV contacts, WebDAV file storage with fine‑grained ACLs and JMAP sharing
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Robust built‑in anti‑spam & phishing filters (rules, LLM analysis, statistical classifier, DNSBL checks, Pyzor, greylisting)
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Pluggable storage backends: RocksDB, FoundationDB, PostgreSQL, MySQL, SQLite, S3‑compatible, Azure Blob, Redis
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Flexible deployment with Rust implementation designed for scalability and security
Review required
v0.16.14
New feature
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Auth
RBAC
Dependencies
+2 more
VAPID, IMAP, JMAP, CalDAV, MTA, Calendar, Telemetry
Upgrade now
v0.16.13
Bug fix
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Auth
Dependencies
FreeBSD + multiple bug fixes
Upgrade now
v0.16.12
Mixed
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Auth
Breaking upgrade
DKIM2 DMARCbis fixes DANE OIDC PostgreSQL Prometheus
Review required
v0.16.11
New feature
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Crypto / TLS
Dependencies
Encryption, S3 invalid certs, Redis Sentinel
Review required
v0.16.10
New feature
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Auth
RBAC
IDN, OAuth, HTTP, ACME, IMAP, JMAP
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