https://sendlens.com/blog/ Notes from the Sendlens team on email analytics, campaign intelligence, and the ESPs we all work inside of. en-us Wed, 22 Apr 2026 19:42:10 GMT https://sendlens.com/blog/activecampaign-reporting-limitations-2026/ https://sendlens.com/blog/activecampaign-reporting-limitations-2026/ ActiveCampaign is a strong sender. But once operators get past the basic campaign report, five specific gaps keep showing up in our calls — and each one has the same shape: the answer lives outside the ESP. Comparison Thierry from Sendlens Tue, 14 Apr 2026 00:00:00 GMT https://sendlens.com/blog/newsletter-vs-promotional-email-benchmarks/ https://sendlens.com/blog/newsletter-vs-promotional-email-benchmarks/ The single most common mistake we see in email analytics is comparing a newsletter to a flash sale and treating the gap as performance. Clusters fix the apples-to-apples problem without asking marketers to redo their taxonomy by hand. Product Thierry from Sendlens Tue, 31 Mar 2026 00:00:00 GMT https://sendlens.com/blog/email-marketing-analytics-gap/ https://sendlens.com/blog/email-marketing-analytics-gap/ Email platforms are very good at sending email. They're less good at telling you why one email outperformed another. That isn't an accident — it's a consequence of what they were built for. Landscape Thierry from Sendlens Tue, 17 Mar 2026 00:00:00 GMT https://sendlens.com/blog/email-automation-flow-analytics/ https://sendlens.com/blog/email-automation-flow-analytics/ Most analytics treat the emails in an onboarding flow as independent campaigns. That's the wrong unit of analysis — and it hides the one question automation teams actually need answered. Landscape Thierry from Sendlens Tue, 03 Mar 2026 00:00:00 GMT https://sendlens.com/blog/why-most-email-ab-tests-dont-teach-anything/ https://sendlens.com/blog/why-most-email-ab-tests-dont-teach-anything/ A/B testing is the default answer to "what should we try next." It also quietly rewards noise as if it were insight. Here's why most email A/B tests teach almost nothing — and what actually produces learning. Landscape Thierry from Sendlens Thu, 26 Feb 2026 00:00:00 GMT