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essandess / SMIME Encrypted Email Example with Gmail and Comodo.md
Last active January 10, 2023 16:35
S/MIME Encrypted Email Example with Gmail and Comodo and macOS

S/MIME Encrypted Email Example with Gmail and Comodo

A quick how-to installation for secure S/MIME installation for a Gmail account on macOS. This certificate can be used to simultaneously encrypt and sign emails.

Obtain and install an S/MIME Certificate

  1. Create a unique revocation passphrase in a password manager—long, random, unique.
  2. Browse to Comodo and request a free, secure email certificate:
  • Enter your name, email address, and specify the maximum 2048 bit length
  • Enter your revocation passphrase in case your private key is ever stolen or compromised