EmailMarketingZone.es  ·  April 2026  ·  6 min read Most email marketers track open rates. But open rates, in the age of Apple Mail Privacy Protection, are increasingly unreliable — inflated by automated prefetching that records an open whether or not a human being actually read the email. Tracking the wrong metrics, or tracking metrics without … Sigue leyendo How to Track Email Performance in 2026