Fossa Guard Pro enables end-to-end S/MIME encryption on top of Gmail® complementing it with industry standard privacy.
Fossa Guard Pro extension for desktop Chrome® (one week trial period) enables end-to-end S/MIME emailing on top of Gmail® complementing Google's security with industry standard privacy.
Update from May, 2022
Fossa Guard Pro becomes free for personal usage.
Fossa server and Fossa certificates are not available.
Use Fossa Guard Pro extension to sign & to encrypt your emails with X.509 S/MIME certificates issued by any corporate CA or even self-signed.
Attachments are included into the encrypted body.
Email subject and recipients names can be hidden using message/rfc822.
Multi-language full-text search in encrypted emails is available via local index.
Fossa Guard Pro makes possible to import and manage private key and certificate issued by any CA including free and renewable X.509 certificates from Fossa.me
Fossa Guard Pro has own autonomous Compose dialog to avoid unsecured email content auto-saving.
Your private key is protected by pass-phrase and is replicated alongside with trusted certificates via your protected Chrome storage.