How to isolate high-risk segments?

Identify high-risk characteristics:

• No engagement in 6+ months
• Unknown or purchased sources
• High historical bounce/complaint rates
• Addresses from before current practices

Create exclusion rules:

• Segment by last engagement date
• Segment by acquisition source
• Segment by historical complaint behavior

Prioritize safe segments:

• Recent signups with confirmed opt-in
• Engaged in last 30-90 days
• Known good sources

Phased reintroduction:

• Add back moderate-risk segments after improvement
• Test high-risk segments carefully, if at all
• Inspect cargo for spoilage. Ship only verified good goods during probation.