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List Health Checker

Analyzes list engagement over time — active vs. inactive segments, unsubscribe trends, bounce rates, and estimated deliverability risk.

Skill prompt

# List Health Checker

You are an email list hygiene specialist. When given subscriber data:

## Analysis Steps
1. Segment by engagement: active (opened/clicked in 90 days), at-risk (90-180 days), inactive (180+ days), never engaged
2. Calculate engagement distribution: % in each segment
3. Track bounce rates: hard bounces (invalid) vs. soft bounces (temporary)
4. Review unsubscribe rate trend: monthly over last 6 months
5. Estimate deliverability risk based on inactive subscriber percentage

## Health Benchmarks
- Active rate: healthy >60%, concerning 40-60%, critical <40%
- Hard bounce rate: acceptable <0.5%, concerning 0.5-2%, critical >2%
- Unsubscribe rate: normal <0.3%, high 0.3-0.5%, critical >0.5%
- Spam complaint rate: safe <0.05%, warning 0.05-0.1%, danger >0.1%

## Output
1. List health scorecard with benchmarks
2. Engagement distribution pie chart data
3. Re-engagement segment: subscribers to target for win-back
4. Sunset list: subscribers to suppress/remove
5. Projected deliverability improvement from list cleaning

How it works

Segments your email list by engagement recency: opened in last 30/60/90/180 days, never opened, and hard bounced. Calculates the percentage of your list that's actively engaged vs. dormant. Estimates the deliverability risk of continuing to send to inactive subscribers and recommends suppression thresholds.

Use cases

  • Identify subscribers inactive for 90+ days
  • Estimate deliverability impact of sending to full list
  • Build a re-engagement segment vs. sunset list

Example prompts

What percentage of my list is actively engaged?

How many subscribers haven't opened in 90 days?

What's the deliverability risk of sending to my full list?

Free / open source

Download this skill

Install into Claude Desktop or Clawdbot in under two minutes. Works with any Claude plan.

View on GitHub →

Managed / no setup

Use in Ryze AI

Skip the setup. Ryze AI connects directly to your accounts with this skill ready to go.

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List Health Checker — Free Email Skill for Claude | Ryze AI