The Mailfence SSL/TLS Certificate

When accessing, the transmission of information between your browsers and our servers in Brussels-Belgium is always encrypted and protected by SSL/TLS – for which each website has a (Public Key) Certificate that is verified by a trusted certificate authority.

Mailfence SSL/TLS Certificate

Mailfence, a secure and private email suite has no American company in its SSL/TLS certification chain and the one which vouches for us is Buypass AS.

A modern browser should automatically check the validity of the Mailfence SSL/TLS certificate and alert you if it detects something untrustworthy. For security conscious users who want to manually check, our SSL/TLS certificate fingerprints/thumbprints (valid until 02/May/‎2020) are:

SHA1 fingerprint:


SHA-256 fingerprint:


If this matches what you see in your browser, then you know you are communicating with the real Mailfence website and using the correct public key to encrypt your sensitive information and only Mailfence can decrypt it.

Last updated: Wednesday, 2nd of May 2018
Next update date: Saturday, 2nd of May 2020


  • For Chrome:
    1. Click on the lock button in front of the URL.
    2. Click on the Certificate.
    3. In Details tab, show All and verify the Thumbprint matches the one above (SHA1).
  • For Firefox:
    1. Click on the lock button in front of the URL and click on More Information.
    2. Go to Security and click on View Certificate.
    3. In General, verify the Fingerprints (SHA1 & SHA-256) matches the one’s above.
  • For Safari:
    1. Click on the lock button in front of the URL.
    2. Select Show Certificate, in Details scroll to the bottom of the page.
    3. Verify the Fingerprints (SHA1 & SHA-256) matches the one’s above.

Note:  Make sure you are looking at the certificate for *

For further assistance, feel free to drop us an email at

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– Mailfence Team

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Mailfence Team

End-to-end encrypted e-mail service that values and respects your privacy without compromising the ease-of-use. @mailfence @mailfence_fr

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