🎉 Launch Offer: up to 97.2% OFF credits.See Plans
Email validation API for instant verification. Free email checker API included. Email address checker integrates in minutes. Valid email checker with 99.9% accuracy.
Millisecond response time always
Verify multiple emails per request
Automatic result callbacks
Automatic retry on failures
Saves API calls automatically
OAuth 2.0 authentication
POST https://api.billionverify.com/v1/verify/single
Content-Type: application/json
BV-API-KEY: YOUR_API_KEY
{
"email": "user@example.com",
"check_smtp": true
}{
"email": "user@example.com",
"status": "valid",
"reason": "accepted",
"score": 98,
"disposable": false,
"role": false,
"free": false,
"smtp_check": true,
"mx_records": true,
"suggestion": null
}Call email checker directly
Email checker SDK support
One-click email checker setup
/v1/verify/singleSingle email checker
/v1/verify/bulkBulk email checker (sync, max 50)
/v1/verify/fileFile upload verification (async)
/v1/creditsCheck remaining credits
statusstringEmail validity checker status
reasonstringValidation reason details
scoreintegerEmail quality score 0-100
disposablebooleanDisposable email detected
suggestionstringTypo correction suggestion
Install: implementation 'com.emailverify:java:1.0'
implementation 'com.emailverify:java:1.0'Free email checker at signup
POST /v1/verify/singleEmail address checker on submit
POST /v1/verify/singleEmail validity checker for data
POST /v1/verify/bulkBulk email checker integration
POST /v1/verify/fileDiscover all email validation tools
Our email checker API responds in under 50ms on average with global CDN deployment. The email validation API supports up to 6,000 single verification requests per minute. The bulk email verification endpoint handles 1,500 batch requests per minute for high-volume email checking.
The email validation API uses simple REST calls with JSON responses. Official SDKs are available for Python, Node.js, Go, PHP, and Ruby. Most developers complete the email checker integration in under 30 minutes. A free email checker API tier lets you test email verification before going live.
Email verification starts at $0.005 per check with pay-as-you-go pricing and no monthly fees. Volume discounts up to 97.2% are available for high-volume email validation. A free email checker tier includes 100 free verifications daily. Enterprise bulk email verification plans offer custom pricing.
The email validation API returns a JSON response with verification status (deliverable, undeliverable, risky, unknown), quality score (0-100), risk level, and detailed reason codes. It also detects disposable emails, role accounts, and provides typo correction suggestions for email verification.
The email validation API uses HTTPS encryption for all requests. API key authentication is required for every email verification call. IP whitelisting is supported for additional security. Our email checker is fully GDPR and CCPA compliant with automatic data deletion.
The email checker API allows 6,000 single verification requests per minute, 1,500 bulk email verification requests per minute, and 300 file upload requests per minute. Rate limits apply per API key. Enterprise email validation plans offer higher limits with dedicated infrastructure.
Yes! Our free email checker API provides 100 free email verifications daily with no credit card required. The free tier includes full email validation features: syntax check, domain verification, SMTP validation, and disposable email detection. Upgrade to pay-as-you-go for bulk email verification needs.
Email checker API for instant validation. Free email checker included. Email address checker verifies real-time. Bulk email checker for batch processing.