# Stalwart Mail Server

> Open-source mail server software with JMAP, IMAP4, POP3, and SMTP support

**Wikidata**: [Q130473419](https://www.wikidata.org/wiki/Q130473419)  
**Source**: https://4ort.xyz/entity/stalwart-mail-server

## Summary
Stalwart Mail Server is an open-source mail server software developed by Stalwart Labs LLC, supporting JMAP, IMAP4, POP3, and SMTP protocols. It is distributed under free software terms, allowing users to run, study, modify, and redistribute it. The project was launched in 2021 and is available for Linux, Windows, and BSD operating systems.

## Key Facts
- **Type**: Open-source mail server software
- **Protocols Supported**: JMAP, IMAP4, POP3, SMTP
- **Developer**: Stalwart Labs LLC (United States, Wyoming)
- **License**: Free software (allows modification and redistribution)
- **Operating Systems**: Linux, Microsoft Windows, Berkeley Software Distribution
- **Latest Stable Version**: 0.10.4 (as of October 8, 2024)
- **Inception**: October 3, 2021
- **Website**: [https://stalw.art](https://stalw.art)
- **Source Code Repository**: [GitHub](https://github.com/stalwartlabs/mail-server)

## FAQs
### Q: What protocols does Stalwart Mail Server support?
A: Stalwart Mail Server supports JMAP, IMAP4, POP3, and SMTP protocols, making it compatible with a wide range of email clients and services.

### Q: Is Stalwart Mail Server free to use?
A: Yes, Stalwart Mail Server is open-source and distributed under free software terms, allowing users to freely run, study, modify, and distribute it.

### Q: On which operating systems can Stalwart Mail Server run?
A: Stalwart Mail Server is compatible with Linux, Microsoft Windows, and Berkeley Software Distribution (BSD) operating systems.

### Q: Who developed Stalwart Mail Server?
A: Stalwart Mail Server was developed by Stalwart Labs LLC, a software company based in the United States with headquarters in Wyoming.

### Q: What is the latest stable version of Stalwart Mail Server?
A: The latest stable version of Stalwart Mail Server is 0.10.4, released on October 8, 2024.

## Why It Matters
Stalwart Mail Server addresses the growing demand for secure, open-source email solutions that support modern protocols like JMAP while maintaining compatibility with traditional protocols such as IMAP4 and POP3. By providing a free and customizable mail server, it empowers users and organizations to manage their email infrastructure without relying on proprietary software. Its support for multiple operating systems ensures flexibility across different environments. The project’s development by Stalwart Labs LLC demonstrates a commitment to open-source collaboration and innovation in email technology.

## Notable For
- **Open-Source Focus**: Stalwart Mail Server is distributed under free software terms, allowing users to modify and redistribute the software.
- **Protocol Support**: It supports JMAP, IMAP4, POP3, and SMTP, catering to a broad range of email clients and services.
- **Cross-Platform Compatibility**: Runs on Linux, Microsoft Windows, and BSD, making it versatile for different operating environments.
- **Active Development**: Regular updates and releases, with the latest stable version being 0.10.4 as of October 8, 2024.
- **Developer Community**: Hosted on GitHub, Stalwart Mail Server benefits from open-source collaboration and community contributions.

## Body
### Overview
Stalwart Mail Server is an open-source mail server software developed by Stalwart Labs LLC. It supports JMAP, IMAP4, POP3, and SMTP protocols, making it a versatile solution for email management. The project was initiated on October 3, 2021, and is distributed under free software terms, allowing users to freely run, study, modify, and redistribute the software.

### Development and Ownership
Stalwart Mail Server is developed and owned by Stalwart Labs LLC, a software company based in the United States with headquarters in Wyoming. The project is hosted on GitHub, facilitating open-source collaboration and community contributions.

### Technical Specifications
- **Protocols**: JMAP, IMAP4, POP3, SMTP
- **Operating Systems**: Linux, Microsoft Windows, Berkeley Software Distribution (BSD)
- **License**: Free software (allows modification and redistribution)
- **Latest Stable Version**: 0.10.4 (October 8, 2024)
- **Website**: [https://stalw.art](https://stalw.art)

### Versions and Updates
Stalwart Mail Server has seen multiple stable releases, including versions 0.3.0 through 0.3.8, each with incremental improvements and bug fixes. The latest stable version, 0.10.4, was released on October 8, 2024.

### Significance
Stalwart Mail Server addresses the need for secure, open-source email solutions that support modern protocols while maintaining compatibility with traditional ones. Its cross-platform support and active development make it a valuable tool for users and organizations seeking control over their email infrastructure.

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## References

1. [Release 0.3.0. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.0)
2. [Release 0.3.1. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.1)
3. [Release 0.3.2. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.2)
4. [Release 0.3.3. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.3)
5. [Release 0.3.4. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.4)
6. [Release 0.3.5. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.5)
7. [Release 0.3.6. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.6)
8. [Release 0.3.7. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.7)
9. [Release 0.3.8. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.8)
10. [Release 0.3.9. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.9)
11. [Release 0.3.10. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.3.10)
12. [Release 0.4.0. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.4.0)
13. [Release 0.4.1. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.4.1)
14. [Release 0.4.2. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.4.2)
15. [Release 0.5.0. 2023](https://github.com/stalwartlabs/mail-server/releases/tag/v0.5.0)
16. [Release 0.5.1. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.5.1)
17. [Release 0.5.2. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.5.2)
18. [Release 0.5.3. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.5.3)
19. [Release 0.6.0. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.6.0)
20. [Release 0.7.0. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.7.0)
21. [Release 0.7.1. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.7.1)
22. [Release 0.7.2. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.7.2)
23. [Release 0.7.3. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.7.3)
24. [Release 0.8.0. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.8.0)
25. [Release 0.8.1. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.8.1)
26. [Release 0.8.2. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.8.2)
27. [Release 0.8.3. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.8.3)
28. [Release 0.8.4. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.8.4)
29. [Release 0.8.5. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.8.5)
30. [Release 0.9.0. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.9.0)
31. [Release 0.9.1. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.9.1)
32. [Release 0.9.2. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.9.2)
33. [Release 0.9.3. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.9.3)
34. [Release 0.9.4. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.9.4)
35. [Release 0.10.0. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.10.0)
36. [Release 0.10.1. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.10.1)
37. [Release 0.10.2. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.10.2)
38. [Release 0.10.3. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.10.3)
39. [Release 0.10.5. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.10.5)
40. [Release 0.10.6. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.10.6)
41. [Release 0.10.7. 2024](https://github.com/stalwartlabs/mail-server/releases/tag/v0.10.7)
42. [Release 0.11.0. 2025](https://github.com/stalwartlabs/mail-server/releases/tag/v0.11.0)
43. [Release 0.11.1. 2025](https://github.com/stalwartlabs/mail-server/releases/tag/v0.11.1)
44. [Release 0.11.2. 2025](https://github.com/stalwartlabs/mail-server/releases/tag/v0.11.2)
45. [Release 0.11.3. 2025](https://github.com/stalwartlabs/mail-server/releases/tag/v0.11.3)
46. [Release 0.11.4. 2025](https://github.com/stalwartlabs/mail-server/releases/tag/v0.11.4)
47. [Release 0.11.7. 2025](https://github.com/stalwartlabs/mail-server/releases/tag/v0.11.7)
48. [Release 0.11.8. 2025](https://github.com/stalwartlabs/mail-server/releases/tag/v0.11.8)
49. [Release 0.12.0. 2025](https://github.com/stalwartlabs/stalwart/releases/tag/v0.12.0)
50. [Release 0.12.1. 2025](https://github.com/stalwartlabs/stalwart/releases/tag/v0.12.1)