Email Detective — ESP Tracker

by EmailTooltester · crowdsourced from Email Detective users
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1brands shown
127ESPs detected
123,350observations
556active users (30d)
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📧 Subscribers (97) 🚩 Gmail-flagged (94) 🐢 Slow delivery (91) ⚠️ Weak setup (78)
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Beehiiv
beehiiv.com ↗
 Beehiiv 1643 Customer.io 66 SendGrid 34 85 1743 2026-07-01