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Deliverability tanked after we moved sending domains — here's what fixed it
A client switched sending domains and open rates fell off a cliff. The fix was unglamorous: authentication + warming + suppression. Write-up inside.
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Topic
Deliverability
Everything that decides whether your email lands in the inbox: SPF, DKIM, DMARC, domain reputation, warming, list hygiene, and how each platform handles deliverability.