This post presents some aspects related to electronic mail (email or e-mail) protocols.
Email Security Protocols
These security protocols are used for example with SMTP:
Domain-based Message Authentication (DMARC) is an e-mail security protocol.
DomainKeys Identified Mail (DKIM) is an e-mail security protocol.
Sender Policy Framework (SPF) is an e-mail security protocol.
- Cloudfare; “What are DMARC, DKIM, and SPF?“, Cloudfare