Verify any email address instantly
9-step verification with 98% accuracy. Reduce bounce rates before they hurt your sender reputation.
50 free verifications/month — no credit card required
sarah.chen@stripe.com
stripe.com
9-Step Verification
98%
Accuracy
<1%
Bounce Rate
9
Verification Checks
<500ms
Average Time
How it works
9 checks, 3 phases, one result
Every email goes through a comprehensive pipeline that validates format, infrastructure, and deliverability.
Syntax Validation
We start by checking the email format against RFC 5322 standards, then run it through our gibberish detector to catch keyboard-mashed addresses like asdkjh@. We also check against a database of 3,000+ disposable email providers.
Infrastructure Verification
We query the domain's DNS records to confirm MX entries exist and point to active mail servers. We then identify whether the domain is a free webmail provider or a corporate mail system, which affects deliverability scoring.
Deliverability Confirmation
We simulate an SMTP handshake with the mail server — connecting and presenting the address without sending any email. This confirms the mailbox exists, checks for catch-all configurations, and gives us a final deliverability verdict.
Verification Pipeline
Phase 1 — Syntax
Phase 2 — Infrastructure
Phase 3 — Deliverability
Features
Built for every verification workflow
Whether you need to verify a single address or clean an entire list, BlueWeb has the tools.
Bulk Verifier
Upload a CSV with thousands of email addresses. Get verified results back in minutes with detailed status for every row.
API Access
Verify emails programmatically with a single API call. Integrate verification into your signup forms, CRMs, or pipelines.
Real-time Results
Most verifications complete in under 500ms. Get instant feedback on deliverability without slowing down your workflow.
No Emails Sent
We simulate the SMTP handshake without sending an actual email. The recipient never knows a verification occurred.
Catch-all Detection
Identify domains configured to accept all addresses. Know when a server says yes to everything so you can flag risky contacts.
Integration Ready
Works with any CRM, marketing automation, or custom tool. Export results as CSV or push verified contacts via our API.
Start verifying emails today
Stop sending to invalid addresses. Protect your sender reputation with 9-step verification on every email.
Free forever · No credit card required · 50 verifications/month