Stalwart
ATH Infosystems · Software Development
Certification per Microsoft Marketplace.
Evidence tier Source Confirmed · 7 captures on record
What the publisher says
As described on Microsoft Marketplace.
Stalwart Mail Server is a free and open-source, modern mail server that enables organizations and individuals to host and manage secure email services through a high-performance, self-hosted platform. Built with Rust, Stalwart supports industry-standard protocols including SMTP, IMAP4, POP3, JMAP, CalDAV, CardDAV, and WebDAV, providing email, calendar, contacts, and file synchronization from a single server. It includes built-in spam filtering, email authentication, TLS encryption, a web-based administration interface, and flexible storage backends, making it an ideal solution for secure, scalable, and enterprise-ready email infrastructure.
Key Features of Stalwart Mail Server:
Show the rest of the publisher’s description (25 more lines)
- Modern, self-hosted mail server with a web-based administration interface.
- Supports SMTP, IMAP4, POP3, and the modern JMAP email protocol.
- Provides CalDAV, CardDAV, and WebDAV support for calendars, contacts, and files.
- Includes built-in spam filtering, anti-phishing, and email security features.
- Supports SPF, DKIM, DMARC, TLS, and other email authentication standards.
- Offers high performance and low resource usage through its Rust-based architecture.
- Supports multiple storage backends and scalable deployment options.
- Provides secure user authentication, account management, and administrative controls.
- Includes comprehensive logging, monitoring, and configuration management.
- Open-source and actively maintained with regular feature updates and security improvements.
Stalwart Mail Server Usage:
$ sudo su
$ apt update
$ cd /opt/stalwart
$ systemctl status stalwart
# Open Stalwart Web Administration Interface:
$ http://YOUR_SERVER_IP:8080
# Check Stalwart Version:
$ /opt/stalwart/bin/stalwart --version
# View Service Logs:
$ journalctl -u stalwart -f
# Restart the Service:
$ systemctl restart stalwart
Disclaimer:
Stalwart Mail Server is an independent open-source email server developed and maintained by the Stalwart project and its open-source community. It is not affiliated with or endorsed by any email service provider, cloud platform, operating system vendor, Docker, or other third-party software or services that may be used for deployment, integration, or compatibility.
Agent build and provenance
See the full provenance
The layer-by-layer build, the evidence behind each claim, the risk basis and the cross-marketplace links are open to any account. Some rows are disclosed, some the source leaves Unknown; a free account shows you which.
Compliance
- FedRAMPConfirmedNot listed90%, registry-checkedNo FedRAMP Marketplace entry matched this vendor's domain, checked 2026-08-27registry recordas observed 2026-08-27
Confirmed means matched to a public authoritative registry. Claimed means the vendor or its listing states it, not yet cross-checked. A framework not shown was not found in any source we hold, which is not evidence against it. Not listed means a scoped registry check found no match for this vendor's domain: a No is a scoped registry check, not a compliance judgment. Confidence bands: 95% domain-verified, 90% registry-checked, 80% self-attested, 70% weak signal. Self-attested items marked “vendor's site” are gathered from the vendor's own website and are not verified by us.
Vendor
External enrichment · as of 2026-08-29
Reconciled on 9/3/2026
Sources
Publisher resources
1 linkLinked repositories
Unknown means this listing does not publish a repository. It is not a statement that the code is closed, and a linked repository is not a claim that the publisher wrote it: the registry computes that relationship privately and does not publish it.
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