---
name: list-building-tips
description: Pro tips for B2B list building - source mixing, enrichment workflow, template usage, and efficiency principles. Use when building prospect lists, optimizing data quality, or improving prospecting efficiency.
---

# List Building Pro Tips

## Core Principles

### 1. Mix Sources
- Don't rely on just one data provider
- Each source has different strengths/coverage
- Combine for maximum coverage

### 2. Scraping = Step 1
- Raw scraped data is just the beginning
- Still need Clay enrichment for:
  - Email verification
  - Phone numbers
  - Company data
  - Custom signals

### 3. Templates Are Modular
- Start with proven templates
- Adjust for specific campaign goals
- Don't rebuild from scratch

### 4. Don't Reinvent the Wheel
- Use existing Clay templates
- Modify rather than create
- Learn from what works

---

## Data Quality Hierarchy

```
1. Verified email (bounced < 2%)
2. Direct phone number
3. Recent activity signal
4. ICP fit confirmed
5. Company enrichment complete
```

---

## Efficiency Benchmarks

| Task | Manual Time | With Clay |
|------|-------------|-----------|
| 100 prospects | 8-10 hours | 30 min |
| 500 prospects | 40+ hours | 1-2 hours |
| 1000 prospects | 80+ hours | 2-3 hours |

---

## Quality Checklist

Before launching any campaign:

- [ ] Email bounce rate < 2%
- [ ] At least 70% email coverage
- [ ] ICP criteria verified
- [ ] Recent signals tagged
- [ ] Duplicates removed
- [ ] Competitor customers flagged
- [ ] Do-not-contact list checked

---

## Common Mistakes

1. **Single source reliance** - Limits coverage
2. **Skipping verification** - Kills deliverability
3. **Over-filtering** - Shrinks TAM too much
4. **Under-filtering** - Wastes outreach on bad fits
5. **Ignoring signals** - Missing hot prospects