Verify Any Email Address withAI-Powered Intelligence
Go beyond simple valid/invalid checks. Get deep intelligence scores, risk assessment, deliverability predictions, and domain health insights for every email address in real time.
Trusted by teams at
Email Address
{ "valid": true,
"score": 0,
"risk": "low",
"deliverable": true }Trusted by 12,000+ teams worldwide
“We replaced three separate tools with SIndbox Intel. The intelligence scoring alone saves our team 10 hours a week on list qualification.”
“The accuracy is unmatched. We went from a 4.2% bounce rate to under 0.5% within the first month of switching from our previous provider.”
“The bulk verification API is blazing fast. We process 500K emails daily through the API with sub-500ms response times consistently.”
We Inspect Every Email Like a Digital X-Ray
From the moment you click send, your email passes through layers of validation — format, DNS, SMTP, encryption, reputation. We scan every layer so you can send with absolute confidence.
AI Intelligence Score
Our proprietary AI analyzes 40+ data points to generate a 0-100 quality score for every email address, combining SMTP verification, domain reputation, MX records, and behavioral analysis patterns.
Deliverability Prediction
Predict whether emails will land in inbox, spam, or bounce using our weighted heuristic engine. Get probability scores for each outcome so you can prioritize your outreach campaigns with confidence.
Domain Health Dashboard
Deep domain analytics including MX record validation, SPF alignment, DKIM signature verification, and DMARC policy checks. Monitor domain reputation and DNS health at a glance.
Smart List Cleaning
Upload your email lists and our system automatically segments high-quality leads, identifies risky addresses, removes invalid entries, and prioritizes your outreach for maximum deliverability.
Real-Time Verification API
Ultra-fast REST API with sub-500ms response times for single verifications and asynchronous batch processing for large lists. Perfect for real-time form validation and CRM integrations.
Risk & Fraud Detection
Detect bot-generated emails, disposable domains, temporary mailboxes, role-based addresses, and pattern-based fake entries. Protect your sender reputation with advanced threat intelligence.
Every Unverified Email
Is a Ticking Time Bomb
A single invalid address can collapse your sender reputation. Our 7-layer verification stack prevents that from ever happening.
From Send to Verified Delivery
Watch your email pass through our verification pipeline — from the moment you hit send to a fully authenticated, deliverability-scored result. Every layer is inspected, encrypted, and validated.
Compose & Submit
Enter a single email address or upload a CSV file with thousands of contacts. Our system accepts bulk lists up to 1 million records at once.
Scan & Encrypt
We run syntax checks, DNS/MX record validation, SMTP handshake verification, SPF/DKIM/DMARC analysis, and domain reputation checks, all in parallel for maximum speed.
Deep Analysis
Our AI engine scores each email on 40+ data points including disposable domain detection, role-based address identification, catch-all server detection, and behavioral risk analysis.
Deliver Results
Get a comprehensive intelligence report with quality scores, deliverability predictions, risk flags, and actionable recommendations. Export clean, segmented lists ready for campaigns.
Every Team Deserves a Verified Inbox
From startup SaaS platforms to enterprise marketing teams, our email validation service powers organizations that need reliable, accurate email intelligence at scale.
Email Marketing Teams
MarketingClean your subscriber lists before campaigns to maximize deliverability, reduce bounces, and protect your sender reputation. Our bulk email verifier processes millions of contacts with detailed segmentation.
SaaS Platforms
SaaSIntegrate our real-time email verification API into your signup flows to block fake, disposable, and bot-generated email addresses at the point of entry. Reduce fraud and improve user quality.
CRM Data Quality
CRMKeep your CRM database pristine with automated verification. Flag outdated contacts, detect role-based addresses, and ensure every record in your pipeline has a verified, deliverable email.
Lead Generation
SalesScore and qualify purchased or scraped email leads before adding them to your pipeline. Identify high-value prospects based on domain reputation, mailbox existence, and deliverability probability.
Your Email Command Center
Watch every email pass through the verification pipeline in real-time. Monitor scores, track deliverability, and protect your sender reputation from a single powerful dashboard.
Total Verified
Valid Rate
Avg Score
Bounce Risk
Verification Volume
Quality Scores
Recent Verifications
Our Shield vs The Competition
Most email validation services only check if a mailbox exists. We encrypt, analyze, and verify every layer of your email to deliver intelligence that others simply can't match.
Feature | SIndbox Intel | Others |
|---|---|---|
| Real-time SMTP verification | ||
| AI intelligence scoring (0-100) | ||
| Deliverability prediction | ||
| Domain health (SPF/DKIM/DMARC) | ||
| Disposable domain detection | ||
| Catch-all server detection | ||
| Role-based address detection | ||
| Bulk verification (1M+) | ||
| Real-time API (<500ms) | ||
| Behavioral risk analysis |
Every Email Deserves Protection
Start free and upgrade as you grow. Higher tiers unlock deeper verification layers, stronger encryption, and enterprise-grade deliverability insights.
Frequently Asked Questions
Unlock the details about our email verification pipeline, intelligence scoring, and security protocols.