Security
TLS
Transport Layer Security. Encryption protocol securing email transmission between servers.
Definition
TLS (Transport Layer Security) is an encryption protocol that secures email transmission between servers. TLS prevents eavesdropping and tampering during transit. Most modern email servers support opportunistic TLS, encrypting connections when possible. Some senders require enforced TLS for sensitive communications.
Pro Tip
Ensure your sending infrastructure supports TLS 1.2 or higher for secure email transmission.