Fossa icon
Secure e-mail becomes easy on desktop Chrome and Gmail
Compatible with
MS Outlook, Thunderbird, iOS Mail, Android Mail (with CipherMail)
Fossa Guard
Fossa Guard Pro ($1.99/month)
S/MIME certificate
Fossa only
Sign & Encrypt email
Certificate Management
S/MIME certificate registry
Multiple private keys
Send mail as
Intelligent Security
Encryption and Signing
Certificate Management

Fossa Guard has own autonomous
Compose and View dialogs to avoid
unsecured email content auto-saving.
Private key is protected by a pass-phrase
and stored in encrypted PKCS#12 archive.

Fossa Guard provides ability
to Sign and to Encrypt your emails
including attachments. Certificates hierarchy
popup menu helps User to decide
about trust level.

Fossa Guard allows User to manage
trusted and end-user certificates inside Chrome
storage synchronized across all your devices.
Fossa Guard Pro makes possible
to import and manage private key
and certificate issued by any CA.

Free S/MIME certificate
Certification Authority
Ease of use issues
free and renewable X.509 certificate
upon Certificate Signing Request (CSR)
for personal S/MIME mailing. is a lightweight Certification
Authority (CA) with an online S/MIME
certificate registry and CRL support. provides seamless integration
with Fossa Guard for secure
certificate (re-)enrollment. does not require
any registration except valid Google account
to start S/MIME mailing.
Fossa Guard Pro supports Send As accounts
making possible to use any email address.

Fossa Team is proud to announce beta of S/MIME mailing solution according to the Terms and Conditions
Please contact for additional information

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Microsoft®, Microsoft Outlook ® are trademarks of Microsoft Corporation
Apple®, iOS® are trademarks of Apple, Inc
Mozilla®, Mozilla Thunderbird® are trademarks of Mozilla Foundation
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