SPF (Sender Policy Framework)
An email authentication method that helps prevent spoofing.
It allows domain owners to specify authorized mail servers to send emails on their behalf, verified via DNS records. This ensures emails are from legitimate sources, reducing phishing and fraud.
DKIM (Domain Keys Identified Mail)
An email authentication method that allows a sender to sign their emails with a cryptographic signature.
This signature helps the recipient verify that the email was sent from the claimed domain and was not altered during transmission, increasing email security and trustworthiness.
DMARC (Domain-based Message Authentication, Reporting, & Conformance)
An email security policy that builds on SPF and DKIM to prevent email spoofing.
It enables domain owners to specify how to handle unauthenticated emails and provides reports on email activity.
One-Click Unsubscribe
Is required for anyone sending more than 5,000 messages per day.
If you are using a reputable Email Service Provider (ESP), the one-click unsubscribe should already be implemented.
