Protecting email content so only intended recipients can read it.
Email encryption protects message content from interception and unauthorised access. Transport encryption (TLS) protects email in transit between servers. Message-level encryption (S/MIME, PGP, Microsoft Message Encryption) protects content end-to-end, remaining encrypted even at rest. Different methods suit different needs—TLS is automatic and transparent; message encryption requires recipient capability but provides stronger protection. Microsoft 365 includes Office Message Encryption for encrypting sensitive emails.
Why It Matters
The DSC Perspective:
Sensitive information in email needs encryption. TLS provides baseline transport protection; message encryption protects content from provider access and data breaches. Use appropriate encryption for sensitive communications.