Case Study: GasBuddy resolves blocklisting and restores inbox deliverability in 48 hours with Litmus

How a small human error led to a blocklisting—and how Litmus helped fix it

GasBuddy, which supports more than 4 million active subscribers in finding cheap gas and planning trips, experienced an unexpected deliverability crisis when a small human error caused test and live emails to land in spam. The team discovered they’d been blocklisted — a first for them — and initially lacked clear guidance on how to diagnose or resolve the issue.

Litmus Spam Testing quickly confirmed listings on SORBS and RATS and pinpointed failing DKIM and DMARC authentication, which let GasBuddy identify and fix the root cause. The team paused sends, submitted unblock requests, and resolved the problem in under 48 hours with minimal impact; Spam Testing is now part of their pre-send checklist to prevent future issues.

GasBuddy

Melanie Kinney

Email Marketing Manager