Articles about
deliverability
Thoughts and field notes on MarTech, customer engagement, and solution architecture.
The Architecture Behind the Acronyms (ESP): The Engine That Never Died, It Got Absorbed
The Email Service Provider faded as a category, but its function still sits inside every modern engagement stack: delivery, reputation, consent, and suppression.
Email Isn't Dead. It's Being Rebuilt From the Inbox Up.
After 25 years, email is still the highest-ROI channel in the stack. But the platforms delivering it in 2026 are fundamentally different and the practitioners who treat email as a legacy channel are falling behind.