Email Verifier — Validate Any Email with 99.5% Accuracy
Our email verifier checks every address with SMTP handshake, MX validation, catch-all resolution, and disposable detection. You get definitive results — valid, invalid, or unknown — and unknown results are always free.
99.5%
Verification accuracy
500M+
Emails verified
<200ms
Response time
$0.002
Per verification (as low as)
SIMPLE PROCESS
How the email verifier works
Submit your emails
Upload a CSV of email addresses, validate one at a time via our platform, or integrate our REST API into your workflow.
Multi-layer verification
Each email goes through syntax checks, DNS/MX validation, SMTP handshake, catch-all resolution, and deliverability scoring.
Get clean, actionable data
Receive a detailed report: valid, invalid, or unknown — with disposable flags, role-based detection, and confidence scores.
Features
Every check your emails need
Multi-layer verification that catches invalid, disposable, and risky emails before they damage your sender reputation.
Leadmagic is hands down the most reliable email finder and validator I've used, and i've used and tested a lot of them. It doesn't inflate results with fake or low-quality emails just to give you a dopamine hit... everything it returns is legit and usable. A lot of tools quietly burn your budget with bad data, but Leadmagic is transparent and trustworthy. When you're paying for emails, that matters. Because the data actually works, I've made real money using it, and I trust it not to waste my time or steal from my pocket.
Aviv Joseph Glazer
Co-founder, PandaMatch
Use Cases
Who uses email verification?
From marketers cleaning campaign lists to SaaS teams blocking fake signups — here's how teams use LeadMagic's email verifier.
Email Marketers
Clean your lists before every campaign. Reduce bounce rates, protect your sender reputation, and improve inbox placement rates across Gmail, Outlook, and Yahoo.
Sales & SDR Teams
Verify prospect emails before outreach so your sequences don't bounce. Works with Smartlead, Instantly, and other cold email platforms your team already uses.
Revenue Operations
Validate and clean your entire CRM in bulk. Upload CSVs of hundreds of thousands of contacts and get verified results back in minutes.
SaaS & Product Teams
Block disposable and invalid emails at signup. Our sub-200ms API integrates into registration flows to stop fake accounts before they enter your system.
Developers & Agencies
Integrate email verification into any product or workflow via our REST API. Simple auth, clear docs, sub-200ms responses, and native Clay/n8n/Zapier connectors.
What is email verification?
Email verification (also called email validation) checks whether an email address is real, active, and safe to send to. A proper email verifier connects to the recipient's mail server, performs an SMTP handshake, and confirms the mailbox exists — all without actually sending a message.
Most email verifiers stop at basic SMTP checks. They'll tell you an email exists on a standard domain, but choke on catch-all domains — companies that accept emails to any address, making it impossible to tell if john@enterprise.com is a real person or a black hole. These verifiers just flag it as "unknown."
LeadMagic's email verifier goes further. Our catch-all validation resolves individual mailboxes within accept-all domains — even behind Proofpoint and Mimecast gateways. 99.5% accuracy with near-zero bounce rates.
And unlike standalone verifiers, LeadMagic is also an email finder. Find and verify in one platform — no juggling multiple tools.
How verifiers handle catch-all domains
Other Verifiers
- Catch-all → "unknown"
- 15-30% delayed bounce risk
- Blocked by Proofpoint/Mimecast
- You skip good prospects
LeadMagic
- Catch-all → valid or invalid
- ~0% bounce rate
- Bypasses security gateways
- Unlock every prospect
Competitive Advantage
Catch-all verification that actually works
Catch-all (accept-all) domains are configured to receive emails to any address — real or not. This makes traditional SMTP verification useless: the server always says "yes," even for addresses that don't exist.
Most email verifiers give up and mark these as "unknown" or "risky." That means you're either skipping valuable prospects at enterprise companies, or sending blind and risking your sender reputation with 15-30% delayed bounce rates.
LeadMagic's catch-all validation uses proprietary algorithms to verify individual mailboxes within catch-all domains. It works even on domains protected by Proofpoint, Mimecast, Barracuda, and other Secure Email Gateways that block standard SMTP verification.
The result: definitive valid/invalid status for emails that every other verifier marks as "unknown." Near-zero bounce rates. No more guessing.
Companies like Microsoft, Google, and most Fortune 500s use catch-all or security-gateway-protected domains. Other verifiers can't touch these.
When LeadMagic resolves a catch-all email to "valid," it delivers. Pay-per-result pricing means you only pay for conclusive results.
I compared LeadMagic to other email finders, and the results made it obvious: LeadMagic had the best data and the best prices. It was a no-brainer to go for an annual deal. The data quality, fair pricing, outstanding support, rapid development, and numerous features made it clear that it was the best option.
Andre Domanski
Founder, Get Sales Meetings
Comparison
How LeadMagic compares to other email verifiers
We benchmarked the top email verification tools on accuracy, catch-all handling, speed, and pricing. Here's how they stack up.
| Feature | LeadMagic | ZeroBounce | NeverBounce | MillionVerifier | Kickbox | Bouncer |
|---|---|---|---|---|---|---|
| Accuracy | 99.5% | 99.6% (claimed) | ~97% (historical) | 99%+ (claimed) | 95% guaranteed | ~99% (claimed) |
| Pricing | From $59.99/mo (0.25 credits/email) | From $0.0138/credit (min 2,000) | From $0.008/email (PAYG) | From $0.0039/email (10K) | From $0.008/email | From $0.008/email (1K) |
| Catch-All Support | Yes — resolves to valid/invalid | Detect only — flags, doesn't resolve | No — marks as 'unknown' | Detect only — doesn't charge for catch-all | Detect only — Sendex score | Deep catch-all for Google/Microsoft |
| Response Speed | <200ms | ~3 seconds | ~3 min / 10K | Fast (real-time API) | Fast (real-time API) | Fast (real-time API) |
| Bulk Verification | CSV + REST API | CSV + API | CSV + API | CSV + API | CSV + API | CSV + API |
| Disposable Detection | Yes | Yes | Yes | Yes | Yes | Yes |
| Find + Verify | Yes — combined platform | Email finder at 20 credits/query | No — via ZoomInfo only | No — verification only | No — verification only | No — verification only |
| Integrations | Clay, Apollo, Smartlead, n8n, Zapier | 60+ integrations | 80+ native integrations | 17+ ESP integrations | 30+ integrations, SOC II | Zapier, Mailchimp, Shield widget |
LeadMagic - great tool to identify leads accurately, and with good actionable information. Great accuracy and speed. It outdoes the nearest competitor by at least 20%, while being a fifth or lower of cost. Any visitors to my site get converted to great leads!
Aamir Kadri
Sales Leader, LeadMagic Customer
Integrations
Works With Your Existing Tools
Seamlessly integrate with the tools you already use. No complex setup required.
Related email products
Email Finder
Find verified B2B emails with 97% accuracy. Find and verify in one step.
Catch-All Validation
Resolve risky catch-all emails to valid or invalid with near-zero bounce.
CSV Enrichment
Upload a CSV of emails and verify them all in bulk. No volume limits.
Data Enrichment
Enrich your B2B data with emails, phones, and company info.
Developer Tools
Available everywhere you build
FAQ
Frequently asked questions
Clean your email list today
Start verifying emails with 99.5% accuracy. Get 100 free credits — no credit card required. Plans from $59.99/mo with validation at 0.25 credits per email.