Why architecture matters here

Email fails on missing DMARC + unhandled bounces. Architecture matters because auth + reputation + feedback loops all combine.

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The architecture: every piece explained

The top strip is auth. MTA / SES / SendGrid. SPF. DKIM. DMARC.

The middle row is reputation. Dedicated IPs. Bounce handling. Complaint feedback. Reputation monitoring.

The lower rows are practice. Content quality. Metrics. Ops — deliverability + compliance + audit.

Email delivery — SPF + DKIM + DMARC + IPs + bounces + reputationlanding in inbox, not spamMTA / SES / SendGridsending infraSPFauthorized sendersDKIMsigned headersDMARCpolicy + reportingDedicated IPswarm up + reputationBounce handlinghard + softComplaint feedbackunsubscribe + spamReputation monitoringSender Score + PostmasterContent qualityavoid triggersMetricsdelivery + open + clickOps — deliverability + compliance + auditwarmhandlelistenmonitorreviewmeasuremeasureoperateoperate
Email deliverability: auth + reputation + response.
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End-to-end flow

End-to-end: transactional email sent via SES. SPF + DKIM signed. DMARC policy = reject on fail. Dedicated IP warmed over weeks. Bounces processed to suppression list. Reputation stable via Postmaster tools. Delivery rate 99.5%.