How to measure inbox placement accurately?
Accurate placement measurement requires multiple approaches:
Seed list testing: Send to test accounts across providers and check where messages land. Tools like GlockApps, Everest, and Mail-Tester automate this.
Panel-based monitoring: Services that track placement using real user panels with permission-based inbox access.
Postmaster Tools: Gmail Postmaster Tools and Microsoft SNDS provide reputation and spam rate data.
Engagement proxy: Compare open rates across providers. Sudden drops can indicate placement problems.
No single method is perfect. Triangulate across multiple sources for confidence.
Check your position with multiple navigational instruments. One reading can be misleading.
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