Navigating Privacy & Compliance: Regional Deliverability Strategies for 2026
Apsis Deliverability Blog Series — Part 2 of 3
When ISPs Change Their Rules, Someone Needs to Be on the Case
Deliverability champions don't just manage technology, they manage relationships. When Microsoft quietly changed their filtering logic in early 2026, it wasn't a technical problem that needed solving. It was a communication challenge that required persistence, expertise, and established ISP connections.