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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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