Deliverability
Improve inbox placement
A checklist.
- Authenticate: DKIM, SPF and DMARC all passing (check the domain page).
- Separate subdomains for marketing and transactional mail.
- Warm up new domains gradually.
- Only email people who asked for it; remove inactive contacts after 6–12 months.
- Keep HTML simple, include a text version, and avoid URL shorteners.
- Make unsubscribing one click (broadcasts do this for you).
- Watch Metrics: bounces under 4%, complaints under 0.08%.
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