email-best-practices

Email deliverability improves by configuring SPF, DKIM, and DMARC DNS records to authenticate sending domains, adding practical TXT records, and applying a phased DMARC rollout strategy from monitoring to enforcement to protect against spoofing.

Transactional emails convey account or service information, while marketing emails promote products and require explicit consent. Distinguishing them optimizes deliverability and ensures compliance with CAN-SPAM, GDPR, and CASL consent and unsubscribe regulations.

GDPR and CASL compliance requires implementing double opt-in consent recording, adding List-Unsubscribe headers to marketing emails, and managing data retention. You must track user consent states and provide accessible unsubscribe mechanisms across marketing flows.

Idempotent retry logic and webhooks ensure operational reliability for transactional email sending by preventing duplicate messages during network failures and processing delivery status updates. This maintains list hygiene through suppression management and handles failed sends gracefully.

Yes, the guidance applies to SaaS apps and marketing platforms sending cross-region emails, covering CAN-SPAM, GDPR, and CASL compliance. It handles domain authentication, consent recording, and cross-region considerations for transactional and marketing flows.