Quality Guide
What Good B2B Lead Data Actually Looks Like
Not all lead data is created equal. Learn to distinguish high-quality contacts from data that will waste your outreach efforts.
Quality Indicators by Data Type
Email Quality
Signs of Good Data
- Personal work email (john.smith@company.com)
- Verified as deliverable via SMTP check
- Not on spam trap or complaint lists
- Domain has active MX records
Signs of Poor Data
- Role-based email (info@, sales@, support@)
- Catch-all domains (accepts any address)
- Free email domains (gmail, yahoo)
- Bounced in previous campaigns
Phone Quality
Signs of Good Data
- Direct dial or mobile number
- Phone type verified (mobile/landline/VoIP)
- Not on federal/state DNC lists
- Area code matches geographic location
Signs of Poor Data
- Switchboard or main company line
- No phone type classification
- Unknown DNC status
- Disconnected or invalid numbers
Contact Information
Signs of Good Data
- Full name (first and last)
- Current job title verified
- Title matches target persona
- Recent employment verification
Signs of Poor Data
- Initials only or single name
- Job title from 2+ years ago
- Generic titles (Manager, Director)
- No employment verification
Company Data
Signs of Good Data
- Current company name and website
- Verified employee count range
- Revenue estimate from multiple sources
- Industry classification (SIC/NAICS)
Signs of Poor Data
- Company no longer exists
- No size or revenue data
- Single-source estimates only
- Vague industry categories
Quality Benchmarks
| Metric | Good | Acceptable | Poor |
|---|---|---|---|
| Email deliverability | >95% | 90-95% | <90% |
| Phone connection rate | >30% | 20-30% | <20% |
| Direct dial coverage | >50% | 30-50% | <30% |
| Mobile phone coverage | >40% | 25-40% | <25% |
| Complete records | >90% | 75-90% | <75% |
| Title accuracy | >85% | 70-85% | <70% |
Key Takeaways
Verification method matters more than database size
Real-time verification outperforms batch verification
Phone type classification is essential for outreach
Complete records convert better than partial data
Fresh data (< 90 days) significantly outperforms old data
Test before you buy with sample data
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