SeaMonkey Mail
The facts below are what the maker publishes about SeaMonkey Mail, checked and dated. Our editors have not written about it yet.
Plans and prices
From SeaMonkey Mail's own pricing page, checked 12 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| SeaMonkey | Free | Free download · Windows x64, macOS x64, Linux x64 |
The facts
Each one read from SeaMonkey Mail's own pages, with the date it was checked.
What it does
- All-in-one suite
- SeaMonkey combines a web browser, email and newsgroup client, feed reader, HTML editor, IRC chat and web development tools.checked 12 Oct 2026
- 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.checked 12 Oct 2026
- 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.checked 12 Oct 2026
- Email features
- Mail supports multiple accounts, tabbed mail, adaptive junk mail controls, customizable tags and mail views.checked 12 Oct 2026
- Extensions
- SeaMonkey supports add-ons and themes, with its add-ons website hosted by the Thunderbird project.checked 12 Oct 2026
- Feeds
- The messaging center includes a reader for RSS and Atom feeds.checked 12 Oct 2026
- 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.checked 12 Oct 2026
- Project audience
- The project says the suite may appeal to advanced users, web developers and corporate users.checked 12 Oct 2026
- Project governance
- The SeaMonkey Association is a German nonprofit established in January 2012 that supports the SeaMonkey project.checked 12 Oct 2026
- Release support
- The project supports only the latest stable version; older and unofficial releases are listed for historical reasons.checked 12 Oct 2026
- Security features
- Mail & Newsgroups includes S/MIME, digital signing, return receipts, address books and LDAP support.checked 12 Oct 2026
- Support channels
- Community support is available through a support mailing list, newsgroup, MozillaZine forums, IRC and Matrix.checked 12 Oct 2026
- 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.checked 12 Oct 2026
The company
- Founded
- 2005checked 28 Sep 2026
- Headquarters
- Germanychecked 28 Sep 2026
Alternatives to SeaMonkey Mail
- 1
Brave Browser
Free planOpen sourceAndroidiOSLinuxmacOS9.2Free plan - 2
DuckDuckGo Browser
Free planAndroidiOSmacOSWindows8.8Free plan - 3
AVG Secure Browser
Free planAndroidWebExtensionmacOS8.8From $39.99 a year - 4
Kameleo
Free planAndroidiOSWebAPI8.8Free plan - 5
Opera
Free planAndroidiOSWebExtension8.7From $48 a year - 6
Waterfox
Free planOpen sourceAndroidExtensionLinuxmacOS8.7From $5 a month