Verify thousands of emails in minutes. Built for cold email agencies who can't afford bounces. 99%+ accuracy with our dedicated SMTP infrastructure.
Trusted by 500+ cold email professionals
18M+
emails verified
99.2%
accuracy rate
40%
cheaper than alternatives
< 2s
average response time
30 days
GDPR auto-delete
Simple Process
No technical setup. Upload, verify, download. That's it.
Drag & drop a CSV or Excel file. We auto-detect the email column. Supports up to 50MB (500K emails).
Our workers perform real SMTP handshakes from dedicated IPs. No guessing — we talk to the actual mail server.
Get a verified CSV with email status, score, and reason. Filter by valid, risky, or catch-all. Import to your tool.
Built Different
Not a reseller. We own the infrastructure — which is why we can charge 40% less.
Real mailbox-level checks. We simulate the first step of sending an email and record exactly what the server says.
Identify domains that accept everything — before you send. We flag catch-alls so you can make an informed decision.
Block Mailinator, 10minutemail, and 3,000+ temporary email providers. Keep your list clean from fake signups.
Verify 100K+ emails in a single job. Our queue handles prioritization automatically — no babysitting required.
Single, batch, and bulk verification endpoints. Webhooks on completion. Full OpenAPI spec. Integrate in minutes.
The first email verifier accessible natively from Claude, n8n, and AI agents via Model Context Protocol.
Stop paying $80/month for a tool that does the same thing for $12. We built ListDB specifically for agencies running 200+ accounts who need reliability, speed, and a price that makes sense at scale.
Your bounce rate kills sender reputation
We flag risky, catch-all, and invalid emails before you press send
Verification costs scale linearly with volume
Our per-credit model stays 40% cheaper than ZeroBounce and NeverBounce
No native AI integration
MCP support lets Claude or n8n trigger verification inside your automations
Pricing
No hidden fees. Cancel anytime. Early bird pricing locked forever for first 100 users.
Comparison
We're not trying to be everything. We're trying to be the best option for cold email teams.
| Feature | ListDB | NeverBounce | ZeroBounce | MyEmailVerifier |
|---|---|---|---|---|
| Price per 1,000 | $1.20–2.40 | $3.00 | $2.80 | $1.90 |
| SMTP verification | ✅ | ✅ | ✅ | ✅ |
| Catch-all detection | ✅ | ✅ | ✅ | ⚠️ Partial |
| Disposable detection | ✅ 3,000+ providers | ✅ | ✅ | ✅ |
| REST API | ✅ | ✅ | ✅ | ✅ |
| MCP integration | ✅ Unique | ❌ | ❌ | ❌ |
| Early bird pricing | ✅ 50% off forever | ❌ | ❌ | ❌ |
| GDPR auto-delete | ✅ 30 days | ⚠️ Manual | ⚠️ Manual | ❌ |
Developer First
Verify a single email in under 5 seconds, run batch jobs async, or integrate ListDB natively inside Claude and n8n with our MCP server. Full OpenAPI spec, webhook events, and API key management.
POST /v1/verify/single
Authorization: Bearer ldb_your_api_key
{
"email": "[email protected]"
}
// Response (< 5s)
{
"email": "[email protected]",
"status": "valid",
"score": 98,
"reason": "smtp_verified",
"provider": "Google Workspace",
"isCatchAll": false,
"fromCache": false
}Everything you need to know before getting started.