Mailing System
Send transactional email reliably with observability and template control.
Recommended approach
- Keep email composition and email delivery concerns separated.
- Trigger sends through async jobs for reliability.
- Version templates and preview locally.
Alternatives and when to choose them
- Direct send in request path only for low-volume internal tools.
- Provider template management when marketing/ops teams own content externally.
Implementation checklist
- Define template versioning and testing strategy.
- Add bounce/complaint tracking.
- Use dedicated domains and sender policies.
Common pitfalls
- No retry/backoff strategy on transient provider failures.
- Tight coupling between domain logic and HTML template rendering.