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Real-time verification engine — v3.1

Kill dead mailboxes
before they kill
your sender score.

VerifyEngine catches syntax ghosts, disposable throwaways, and cold SMTP failures in under 400ms — before a single send poisons your domain reputation.

↗MX Lookup⚡SMTP Check⚠Catch-All Detection🛡Risk Scoring
SOC 2 Type II
GDPR Compliant
99.97% uptime
verify.engine — live trace
4.2B+Emails Verifiedacross all customers
99.1%Accuracy Rateindustry-leading precision
<400msp99 Latencyglobal edge network
38%Avg Bounce Reductionfirst-pass cleaning
55%Conversion Liftafter list verification
MX Record Lookup
SMTP Verification
Catch-All Detection
Disposable Domain DB
Syntax Validation
Risk Scoring
Role Address Check
Spam Trap Detection
DNS Propagation
Bounce Prediction
IP Reputation
Domain Age Check
MX Record Lookup
SMTP Verification
Catch-All Detection
Disposable Domain DB
Syntax Validation
Risk Scoring
Role Address Check
Spam Trap Detection
DNS Propagation
Bounce Prediction
IP Reputation
Domain Age Check

By The Numbers

Live infrastructure metrics

4.2BEmails verified
99.1%Accuracy rate
312msMedian latency
0.3%False positive rate

API Reference

Sub-400ms median latency

{
  "verdict": "safe",
  "risk_score": 92,
  "deliverable": true,
  "mx_found": true,
  "is_disposable": false
}
99.97% uptime
p99 < 400ms

Deliverability Simulator

Drag to model your list

100K
10K1M
Dead Mailboxes
4K
Clean Sends
97K
Cost Saved
$2.80
Inbox Rate
94.2%
Reputation RiskHIGH — ISP block likely

Verification Pipeline

Four-layer defense, milliseconds apart

01 Syntax

RFC 5322 pattern match, TLD validation, local-part sanity check. Rejects ghosts in <1ms.

Threat Breakdown

Sample 7K list analysis

Disposable84712%
Catch-All1,20317%
Dead Mailbox2,10429%
Syntax Error3124%
Safe to Send2,53436%
Total analyzed: 7,000
5.0 avg
"Dropped our Postmark bounce rate from 3.1% to 0.4% in one pass. ISP blocks stopped immediately."
Marcus Chen
Marcus Chen
Growth Engineer · Helios CRM
5 spots left at launch pricing

Verify 100 Emails Free

No credit card. No company name. Just results.

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100 free verifications
Developer?Grab your API key →

Your next send is either
clean or compromised.

Lists containing ≥3% bounces trigger ISP blocks. The average unverified list is 4–8% dead. Verify before you send.

Verify 100 Emails FreeView API Docs

No credit card · No company name · 100 verifications on the house

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