How outbound sequences are built and run: step timing, throttling, reply handling and the rules that decide who gets which message and when.
Agencies are bolting AI agents onto programmatic outbound this quarter. None of them are selling the CRM data model, sender reputation, or routing logic that actually decides whether it converts.
The sequence ran. The reply came in. And then nothing happened, because the HubSpot implementation was never built to handle what came back.
The sequencer is usually fine. The data feeding it is not. ELT centralizes the raw records; reverse-ETL pushes curated segments back out. Without both, suppression logic has gaps and reps work from stale data.