Week 1: Great replies. Week 3: Radio silence.
The ISPs are smarter than your warm-up script. They detect robotic patterns, flag predictable behavior, and penalize you the moment you scale. Your infrastructure doesn't need fixing. It needs lifecycle management.
The Decay Curve
Your sender reputation peaks at Day 14, then collapses by Day 21. Every campaign hits the wall.
Pattern Detection
Gmail's algorithm caught your warm-up cadence. Your random sends aren't random enough.
The Reset Trap
Burning through domains faster than you can provision them. You're in an infinite loop of setup and failure.