Topic guide

Email

A guided route through the 15 terms attached to Email, from authentication and sender health to provider requirements and unsubscribe controls.

15 terms · 4 conceptual clusters

Cluster 1

Authentication and identity

How a sending domain proves and presents its identity.

SPFWhat SPF authorizes and what it does not prove.DKIMDKIM signing, cryptographic requirements, and alignment.DMARCLearn how DMARC uses SPF or DKIM alignment and how to move from reports to enforcement without blocking legitimate senders.BIMIBIMI logo signals, DMARC enforcement, and provider scope.

Cluster 2

Delivery and sender health

How mailbox providers assess delivery outcomes and sending reputation.

Email deliverabilityInbox placement and delivery outcomes.Domain reputationAuthenticated-domain reputation in Google reporting.IP reputationSending IP reputation and its provider scope.Sender reputationLearn how mailbox-provider reputation evidence differs, how domain and IP scope change the diagnosis, and what to check before changing infrastructure.Spam complaint rateProvider-scoped complaint measurements and thresholds.

Cluster 3

Rules and provider requirements

The legal and provider-specific requirements that govern bulk email.

CAN-SPAMUS commercial-email scope, requirements, and opt-out timing.Gmail bulk sender requirementsGmail's bulk-sender scope and published authentication requirements.Yahoo sender requirementsYahoo authentication, unsubscribe, and spam guidance.

Cluster 4

Unsubscribe and suppression controls

The mechanisms that carry opt-out requests and prevent further sends.

List-Unsubscribe headerList-Unsubscribe headers and one-click boundaries.One-click unsubscribeRFC 8058 headers and endpoint requirements.Suppression listAmazon SES suppression scope and reasons.

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