Best Practices
Operational checklist for safe sending, deliverability and reputation control.
Amazon SES
Use configuration sets so sends are linked to SNS delivery, bounce and complaint events.
Completed 5/12/2026, 2:56:00 PMConfirm subscription, validate topic/signature before production, and map events to provider health.
Completed 5/12/2026, 2:56:00 PMCompliance
Never keep sending to hard bounces or complaint recipients; suppress them globally.
Completed 5/12/2026, 2:56:00 PMTransactional emails may differ, but marketing/support style sends must respect unsubscribed users.
Completed 5/12/2026, 2:56:00 PMDNS & Auth
Include SES/custom provider sending hosts and avoid multiple SPF records on the same domain.
Start with p=none while measuring, then move toward quarantine/reject when clean.
Use provider DKIM, rotate keys carefully, and confirm DKIM passes in real inbox headers.
Monitoring
Alert when complaint rate, bounce rate, queue delay or provider failures cross thresholds.
Completed 5/12/2026, 2:56:00 PMRouting
When provider or sender quota is exceeded, email should wait in queue instead of failing permanently.
Completed 5/12/2026, 2:56:00 PMTreat Gmail, Yahoo and Microsoft separately; exclude or cool down weak provider/domain combinations.
Warmup
Start low, increase daily, and pause or reduce volume when bounce/complaint hints appear.
Completed 5/12/2026, 2:56:00 PMReputation
Track Outlook/Hotmail IP reputation and complaint feedback separately from Gmail.
Track Gmail spam rate, domain reputation, IP reputation and auth errors.