What is S/MIME?

S/MIME is an email encryption and signing standard built around certificates issued by trusted authorities. Unlike PGP’s user managed keys, S/MIME relies on formal, verifiable identity chains.

It is a naval convoy operating under official government seals.

S/MIME works through a centralized trust model where a Certificate Authority validates identities. Enterprises love S/MIME because they can centrally issue, manage, and revoke employee certificates, something impossible in the decentralized PGP model.