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Case Study

Southwest Airlines Achieves First-Class Email Deliverability with Validity Everest and Sender Certification

Southwest Airlines Achieves First-Class Email Deliverability with Validity Everest and Sender Certification

Southwest Airlines Achieves First-Class Email Deliverability with Validity Everest and Sender Certification

Validity
Pages 5 Pages

Southwest Airlines improved email deliverability using Validity’s Everest and Sender Certification. With high email volume and multiple IPs, they needed better visibility and inbox placement. Everest provided analytics, design previews, and list validation. Sender Certification boosted their reputation with ISPs like Microsoft and Yahoo. As a result, Southwest achieved a \~100% inbox placement rate—11% above non-certified benchmarks—even during peak travel periods. Encouraged by these results, they’re expanding use across departments and added BIMI for visual branding and security enhancement.

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