Should I segment my list during warmup?

Segmentation during warmup is essential:

First tier (warmup start):

Opened or clicked in last 30 days

Recent subscribers (last 90 days)

Known high engagers

Second tier (after initial warmup):

Opened in last 60-90 days

Moderate engagement history

Third tier (later stages):

Opened in last 6 months

Lower but present engagement

Caution tier (if at all):

No engagement in 6+ months

Unknown engagement status

May never add during recovery

Engagement-based segmentation ensures positive signals dominate during warmup.

Deliver to the most receptive customers first. Their positive reception builds your standing.