Reliable email delivery depends on more than choosing a provider. Authentication, domain trust, sending patterns, and message quality all affect whether email reaches the inbox consistently. For product teams using SES, proper SPF, DKIM, and DMARC configuration is foundational.
Authentication builds sender trust
SPF, DKIM, and DMARC help receiving systems evaluate whether your mail is authentic and properly aligned with the sending domain.
Deliverability is both technical and operational
Configuration matters, but so do sending patterns, reputation, bounces, and complaint handling.
DMARC should be monitored, not just enabled
DMARC reporting can provide useful visibility into domain usage, misalignment, and spoofing risk if teams actually review it.
Before acting, confirm the owner, evidence, production risk, expected outcome, and validation method for each recommendation.