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SeaMonkey Mail

seamonkey-project.org

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Spec sheet

Headquarters
GermanyRead 28 Sep 2026 · seamonkey-project.org
Founded
2005Read 28 Sep 2026 · seamonkey-project.org
All-in-one suite
SeaMonkey combines a web browser, email and newsgroup client, feed reader, HTML editor, IRC chat and web development tools.Read 12 Oct 2026 · seamonkey-project.org
Current release
SeaMonkey 2.53.24 was released on July 28, 2026, and the project says automatic upgrades from earlier 2.53.x versions are enabled.Read 12 Oct 2026 · seamonkey-project.org
Download integrity
The project says Windows releases are distributed unsigned while it works on a new signing process, and advises users concerned about integrity to check provided checksums.Read 12 Oct 2026 · seamonkey-project.org
Email features
Mail supports multiple accounts, tabbed mail, adaptive junk mail controls, customizable tags and mail views.Read 12 Oct 2026 · seamonkey-project.org
Extensions
SeaMonkey supports add-ons and themes, with its add-ons website hosted by the Thunderbird project.Read 12 Oct 2026 · seamonkey-project.org
Feeds
The messaging center includes a reader for RSS and Atom feeds.Read 12 Oct 2026 · seamonkey-project.org
Profile warning
The release page warns that version 2.53.24 changes profiles in a way that cannot be reverted for versions earlier than 2.53.1 and advises making a full backup.Read 12 Oct 2026 · seamonkey-project.org
Project audience
The project says the suite may appeal to advanced users, web developers and corporate users.Read 12 Oct 2026 · seamonkey-project.org
Project governance
The SeaMonkey Association is a German nonprofit established in January 2012 that supports the SeaMonkey project.Read 12 Oct 2026 · seamonkey-project.org
Release support
The project supports only the latest stable version; older and unofficial releases are listed for historical reasons.Read 12 Oct 2026 · seamonkey-project.org
Security features
Mail & Newsgroups includes S/MIME, digital signing, return receipts, address books and LDAP support.Read 12 Oct 2026 · seamonkey-project.org
Support channels
Community support is available through a support mailing list, newsgroup, MozillaZine forums, IRC and Matrix.Read 12 Oct 2026 · seamonkey-project.org
Supported systems
The current release is available for Windows x64, macOS x64 and Linux x64; the project says 32-bit Windows and Linux builds ended with version 2.53.21.Read 12 Oct 2026 · seamonkey-project.org

Plans and prices

SeaMonkey Free Free download · Windows x64, macOS x64, Linux x64 Read 12 Oct 2026 · seamonkey-project.org

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