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Shared IP

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Shared IP

A sending IP shared by multiple senders, where neighbor behavior can affect reputation.

Reading time:: 5 min
Difficulty:: Intermediate
Estimated duration:: 5 min
Prerequisites:: IP reputation
Last updated:: 2026-07-15
Author:: empire

Definition

Shared IP environments can be poisoned by poor neighbor practices; vetting and similar metrics matter.

Prerequisites

IP reputationProvider trust in a sending IP address based on historical traffic quality and outcomes.

ReputationHow mailbox providers judge senders from IP, domain, and behavioral signals over time.
IP reputationProvider trust in a sending IP address based on historical traffic quality and outcomes.

Open step-by-step: Choose dedicated vs shared IPDecide IP allocation based on volume, isolation needs, and operational readiness.

PreviousDedicated IP NextComplaint rate

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