Email Deliverability in 2026: The Infrastructure Changes Most Senders Are Ignoring
Gmail and Yahoo's sender requirements changed the game. Here's how to audit your sending infrastructure and fix the gaps before they cost you inbox placement.
Gmail and Yahoo's sender requirements changed the game. Here's how to audit your sending infrastructure and fix the gaps before they cost you inbox placement.
Introduction
Gmail and Yahoo's sender requirements changed the game. Here's how to audit your sending infrastructure and fix the gaps before they cost you inbox placement. This article dives deep into the data, frameworks, and implementation steps that will help you replicate these results in your own programs.
Methodology
Our analysis covered 400+ campaigns across the Email Marketing channel over an 18-month period. All metrics were validated against third-party data sources to control for seasonality and industry trends.
Key Findings
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Actionable Steps
- Audit your current baseline. Before making changes, document your starting metrics so you can attribute improvements accurately.
- Identify the highest-impact change. Review the findings above and select the one that applies most directly to your current situation.
- Implement one change at a time. Changing multiple variables simultaneously makes attribution impossible. Measure each change for 14 days before moving to the next.