What it does
eM Client documents built-in PGP and S/MIME email encryption, signing and key management. Its guide covers creating or importing keys, choosing message formats and verifying signed messages.
eM Client’s encryption guide distinguishes signing from encryption. A signature helps a recipient check a message’s origin and integrity, but does not hide its contents. The composer has separate controls for those actions.
The guide covers creating a key pair, importing an existing key and exchanging public keys with contacts. It also explains the difference between PGP/MIME, which can cover formatting and attachments, and inline PGP. A warning appears when an encrypted message lacks a valid recipient key. Those details make it a candidate for people who want standard encrypted email inside a conventional mail application.
Desktop Free requires registration and allows home use on one device with two email accounts. Paid Personal and Business rights differ; the Android and iOS apps are separately free to use. A one-time desktop purchase covers the current major version, while future versions need the applicable upgrade entitlement.
Strengths
- PGP and S/MIME are both documented.
- Keys can be created or imported within the client.
- The guide explains attachment-aware PGP/MIME and inline PGP formats.
Best for
- People who need to exchange standard PGP or S/MIME email from one client
Sources
- Email Encryption | PGP | eM Client (Oct 26, 2026)
- Pricing | eM Client (Oct 26, 2026)