S/MIME
- UI extension
- Version 1.4.3
- 1.3k downloads
- Bulwark 1.15.0 or later
End-to-end S/MIME for webmail: sign (opaque or detached) and encrypt outgoing messages, and automatically verify signatures and decrypt incoming CMS (PKCS#7) mail. Private keys are imported from a PKCS#12 (.p12/.pfx) file, encrypted at rest with a passphrase, and unlocked into non-extractable WebCrypto keys that never leave your browser. Runs in the privileged (same-origin) plugin tier so all cryptography happens locally with bundled pkijs/asn1js.
Install opens the marketplace on your own Bulwark, through connector.bulwarkmail.org. Your server address stays in your browser.
What's new in 1.4.3
Nov 1, 2026Fixed
- Two signed or encrypted messages sent at the same time from one address are no longer refused by Bulwark 1.20 when the organisation uses classification labels
Versions
| Version | Released | Actions |
|---|---|---|
| 1.4.3 | Nov 1, 2026 | Install version 1.4.3 on your BulwarkDownload version 1.4.3 |
| 1.4.2 | Oct 31, 2026 | Install version 1.4.2 on your BulwarkDownload version 1.4.2 |
| 1.4.1 | Oct 28, 2026 | Install version 1.4.1 on your BulwarkDownload version 1.4.1 |
| 1.4.0 | Oct 20, 2026 | Install version 1.4.0 on your BulwarkDownload version 1.4.0 |
| 1.3.2 | Oct 18, 2026 | Install version 1.3.2 on your BulwarkDownload version 1.3.2 |
3 older versions
| Version | Released | Actions |
|---|---|---|
| 1.0.2 | Jul 9, 2026 | Install version 1.0.2 on your BulwarkDownload version 1.0.2 |
| 1.0.1 | Jun 28, 2026 | Install version 1.0.1 on your BulwarkDownload version 1.0.1 |
| 1.0.0 | Jun 28, 2026 | Install version 1.0.0 on your BulwarkDownload version 1.0.0 |
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