Eliminate hard bounces for good.
Basic syntax checks aren't enough. We verify the actual mailbox in real-time so your emails land exactly where they should.
Try our affordable verification engine for free.
Upload a list and see our 99% accuracy in action with 500 free credits. Or verify a single email address instantly.
The 30-step verification engine.
Every email you upload undergoes a thorough technical probe. We don't 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.
Find and verify the exact email addresses for your target accounts in seconds.
Scale your outreach, not your workload.
We find the email and instantly verify it in one step, so you never waste credits on addresses that bounce.
Perfect for high-volume sales teams. We do the heavy lifting of finding valid contacts so you can focus entirely on your pitch.
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 index of known honeypots and spam traps. Hitting even one can blacklist your domain—we strip them out automatically.
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 protect your domain reputation by stripping out the addresses that trigger spam filters before you hit send.
Reputation first
Every bounce tells ISPs you're a sloppy sender. We clean your lists so you always look like a professional.
Real-time Accuracy
Cached databases are full of stale data. We perform live SMTP checks on every single request.
Intelligent Finder
Our discovery tool doesn't just scrape; it validates. Every lead comes with a pre-verified status.
Cost Efficiency
Stop paying your email provider to message dead inboxes. We reduce wasted sending by up to 30%.
Why basic verification fails.
Basic tools stop at syntax checks. We verify if a mailbox is active, detect underlying spam-traps, and eliminate the risk of hard bounces.
Standard Verifiers
LeadPure Engine
Connected to your favorite tools.
Stop manually moving CSVs. Connect LeadPure to your marketing stack and automate your list 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
Automated 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"Reliability at scale.
We process millions of records daily on a distributed network built for 100% uptime and strict security compliance.
Global Verification Network
Our servers are distributed globally, which means we can bypass strict firewalls and provide accurate verification results anywhere in the world.
Security & Privacy
All data is encrypted at rest and in transit. We automatically purge your uploaded lists, ensuring full GDPR compliance. Your data remains yours.
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.
