As email service providers tighten spam thresholds, engineering teams are abandoning shared pools for isolated reputation architectures.
Julian Vance·1 Oct 2026·9 min
Staff Writer & Product Designer
Senior Infrastructure Fellow focusing on email protocols (SPF/DKIM/DMARC), IP pool reputation algorithms, and enterprise deliverability engineering.
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As email service providers tighten spam thresholds, engineering teams are abandoning shared pools for isolated reputation architectures.