Built for zero-bounce deliverability.
LeadPure goes beyond basic syntax checks. We probe the underlying infrastructure of every mailbox to ensure your emails actually arrive.
The 30-step verification engine.
Every email passing through LeadPure undergoes a thorough technical probe. We don't just guess; we verify mailbox existence in real-time.
INFO: Handshake with mx1.google.com
OK: SMTP connection (220)
INFO: Probing rcpt to:
Lead Discovery
at scale.
Improve your outreach response rates by finding the right emails for your target accounts using in-house technology.
Scale your outreach, not your workload.
We built our discovery tool to handle the heavy lifting. By discovering and validating emails with our own technology, we ensure you have the best possible chance of reaching your prospect.
Perfect for account-based marketing or high-volume sales teams. We handle the technical complexity of finding emails so you can focus on the message.
Bulk Discovery
Upload a list and find thousands of emails in minutes.
Real-time Lookup
Instant results for single searches when you're on the move.
Everything you need for email outreach.
From bulk list cleaning to real-time lookup tools, LeadPure provides the infrastructure required for high-volume outreach.
Bulk Verification
Upload thousands of emails via CSV or JSON. We process 10,000 records in under five minutes with line-by-line status reports.
Real-time API
Integrate our 200ms verification endpoint directly into your signup forms to stop fake signups before they enter your database.
Spam Trap Shield
We maintain an active database of known honeypots and spam traps. Avoiding these is critical for keeping your domain off blacklists.
Email Discovery
Find professional email addresses for any domain. Our lookup tool validates found emails instantly so you don't waste credits on guesses.
Catch-all Detection
Identify mail servers configured to accept all mail. These addresses are often risky; we flag them so you can decide how to outreach.
Automated Webhooks
Get real-time notifications sent to your backend once a bulk list finishes processing. Perfect for automated list synchronization.
Why professionals choose LeadPure.
We stop the cycle of reputation decay by removing the addresses that trigger filters before you hit send.
Reputation first
Every bounce tells ISP filters that you are a low-quality sender. We stop the cycle of reputation decay.
Real-time Accuracy
Cached data is stale data. LeadPure performs live SMTP probes on every request for 100% certainty.
Intelligent Finder
Our discovery tool doesn't just scrape; it validates. Every lead comes with a pre-verified status.
Cost Efficiency
Stop paying your ESP to send mail to robots. LeadPure typically reduces wasted sending by 30%.
We go where others stop.
LeadPure goes beyond basic existence checks. We verify if a mailbox has sufficient storage to receive new mail, detect underlying spam-trap signatures, and confirm active user engagement.
Standard Verifiers
LeadPure Engine
Connected to your favorite tools.
Stop manually moving CSVs. Connect LeadPure to your marketing stack and automate your audience hygiene.
Mailchimp
Direct audience sync for automated audience hygiene.
HubSpot
Keep your CRM database clean and reduce bounce rates.
Zapier
Connect LeadPure to 5,000+ apps in your current workflow.
SendGrid
Verify transaction lists before they hit the send queue.
Salesforce
Maintain lead quality in your enterprise sales funnel.
Brevo
Seamless list management for marketing automation.
A dedicated API for critical paths.
Verify emails at the source. Integrate our low-latency endpoint directly into your sign-up, login, or checkout flows.
Low-Latency Verification
Average response times of 200ms mean your users won't even notice the check. Perfect for preventing fake sign-ups without adding friction.
Webhooks & Events
Automatically trigger internal workflows once a bulk job is completed. We'll POST the results directly to your server in the format you need.
1// One-line Verification2const { status } = await LeadPure.verify('user@gmail.com');3console.log(status); // "valid"Infrastructure you can trust.
We process millions of records daily on a distributed network built for 100% uptime and bank-grade data security.
Global Verification Network
Our probes originate from a globally distributed network of servers. This ensures we can bypass local greylisting and provide accurate SMTP results for any region on earth.
Security & Privacy
Data is encrypted at rest and in transit. We automatically purge your uploaded lists after 30 days. GDPR and SOC2-ready infrastructure with manual wipe triggers.
Ready to clean your email lists?
Join thousands of marketers and developers using LeadPure to maintain
high deliverability and discover new leads with 99% accuracy.
