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Dev.to
Dev.to
7/18/2026
You fixed SPF, DKIM and DMARC and email still lands in spam. Here's why.

You fixed SPF, DKIM and DMARC and email still lands in spam. Here's why.

Short summary

Email authentication (SPF/DKIM/DMARC) proves identity but says nothing about whether mailbox providers should trust you. Fresh domains default to suspicious because most new high-volume senders are junk, so deliverability depends on building domain and IP reputation through engagement signals over 45-60 days. Warm up by sending to your most engaged contacts first, ramping volume only while bounces and complaints stay near zero.

  • Auth records prove identity, not trustworthiness — fresh domains are guilty until proven otherwise
  • Domain reputation is built on engagement (opens/clicks), so send to your most active contacts first during warmup
  • Expect 45-60 days for a new domain to reach stable inbox placement; never mail cold lists on a fresh domain

Generated with AI, which can make mistakes.

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