Certificate fingerprints

These are the fingerprints for Fastmail SSL/TLS certificates. They can be useful if you need to confirm that non-browser connections are secure.

app.fastmail.com, imap.fastmail.com, smtp.fastmail.com, etc.

  • SHA-1 fingerprint: 08:9F:97:92:3D:5E:15:17:0F:4C:A6:9D:65:0C:82:FA:43:7D:B0:94
  • SHA-256 fingerprint: A1:66:0C:DA:B3:C1:3F:69:1D:A4:96:81:62:C0:60:C5:94:4C:E9:A2:86:1A:3F:09:6F:74:6D:F0:49:D7:C7:62

www.fastmailusercontent.com

  • SHA-1 fingerprint: D3:7C:50:6B:FE:48:BD:89:8E:CF:90:67:E3:B4:42:2A:40:9F:31:2E
  • SHA-256 fingerprint: 1E:95:2A:2D:68:3A:70:15:C9:5D:09:CA:4A:49:EE:3D:50:61:80:17:4C:05:E9:0D:69:F0:69:AA:FC:E7:A3:C4

mail.messagingengine.com (deprecated)

  • SHA-1 fingerprint: 95:E8:90:38:5B:50:D0:7B:A4:C3:28:9E:87:42:F7:35:8B:2E:F3:8D
  • SHA-256 fingerprint: 88:9F:68:E9:BA:CD:7B:81:DA:99:EC:55:C6:49:94:5D:AE:8A:6A:9D:0A:26:AB:99:6D:07:F8:D4:DD:24:29:34
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