EmailMarketingZone.es  ·  April 2026  ·  8 min read Email marketing generates a dizzying array of numbers. Open rates, click rates, bounce rates, CTOR, deliverability rates, revenue per email, list growth rate, spam complaint rates, forwarding rates. For anyone new to the discipline — or even for experienced marketers who have never had the underlying concepts … Sigue leyendo Email Marketing Metrics Explained for 2026