99.9% Accuracy
Industry-leading email validation with syntax, domain, and SMTP verification.
Popular API
Email Validation API
Validate email addresses with syntax, domain, and SMTP verification. Reduce bounces, improve deliverability, and protect your platform from spam.
API endpoint
GET https://emailvalidation.cleariflow.com/v1/?api_key=YOUR_API_KEY&email=jane.doe%40acme-corp.com
Try it now
Test the API with live data
API benefits
Fraud Protection
Detect disposable emails, role accounts, and catch-all domains to protect your platform.
Rich Data Points
Get detailed validation results including deliverability status, quality score, and format flags.
Real-time Verification
Validate emails instantly with DNS, MX, and SMTP checks where supported.
Risk Assessment
Comprehensive risk scoring to identify potentially harmful or low-quality email addresses.
Lightning Fast
Sub-200ms response times with global infrastructure and intelligent caching.
Key features
- Syntax validation and formatting
- Domain and MX record verification
- SMTP mailbox verification
- Disposable email detection
- Role account identification
- Free email provider detection
- Catch-all domain detection
- Deliverability status checking
- Quality score assessment
- Auto-correction suggestions
- International domain support
- JSON response format
Quick start guide
1. Get your API key
Sign up for free and get instant access to your API key.
2. Make your first request
cURL
curl -X GET \ "https://emailvalidation.cleariflow.com/v1/" \ ?api_key=YOUR_API_KEY \ &email=jane.doe%40acme-corp.com
3. Handle the response
JSON
{
"autocorrect": "",
"deliverability": "DELIVERABLE",
"email": "jane.doe@acme-corp.com",
"is_catchall_email": {
"text": "FALSE",
"value": false
},
"is_disposable_email": {
"text": "FALSE",
"value": false
},
"is_free_email": {
"text": "FALSE",
"value": false
},
"is_mx_found": {
"text": "TRUE",
"value": true
},
"is_role_email": {
"text": "FALSE",
"value": false
},
"is_smtp_valid": {
"text": "TRUE",
"value": true
},
"is_valid_format": {
"text": "TRUE",
"value": true
},
"quality_score": 0.85
}
Free
Monthly
$0
100 requests/month
- REST API access
- Up to 1 requests/sec
- Core documentation
Starter
Monthly
$6
5,000 requests/month
- Everything in Free
- Up to 3 requests/sec
- Billed as shown in your account
Basic
Monthly
$12
15,000 requests/month
- Everything in Free
- Up to 5 requests/sec
- Billed as shown in your account
Standard
Monthly
$23
30,000 requests/month
- Everything in Free
- Up to 10 requests/sec
- Billed as shown in your account
Business
Monthly
$33
50,000 requests/month
- Everything in Free
- Up to 25 requests/sec
- Billed as shown in your account
Professional
Monthly
$66
150,000 requests/month
- Everything in Free
- Up to 50 requests/sec
- Billed as shown in your account
Starter
Annually
$69
60,000 requests/year
- Everything in Free
- Up to 3 requests/sec
- Billed annually as shown in your account
Basic
Annually
$143
180,000 requests/year
- Everything in Free
- Up to 5 requests/sec
- Billed annually as shown in your account
Standard
Annually
$253
360,000 requests/year
- Everything in Free
- Up to 10 requests/sec
- Billed annually as shown in your account
Business
Annually
$363
600,000 requests/year
- Everything in Free
- Up to 25 requests/sec
- Billed annually as shown in your account
Professional
Annually
$729
1,800,000 requests/year
- Everything in Free
- Up to 50 requests/sec
- Billed annually as shown in your account