Verify Emails
With Confidence
Comprehensive email validation API with 20+ checks. Reduce bounces, catch fake signups, and protect your sender reputation.
🔍 Try It — Validate an Email
Start Validating in 30 Seconds
# Validate a single email curl -X POST "https://mail.blunek.services/v1/validate" \ -H "Content-Type: application/json" \ -H "X-API-Key: YOUR_API_KEY" \ -d '{"email": "user@example.com", "deep_check": true}' # Response { "email": "user@example.com", "is_valid": true, "is_deliverable": true, "score": 95, "checks": { "syntax_valid": true, "mx_valid": true, "is_disposable": false, "spf": { "exists": true, "policy": "softfail" }, "dmarc": { "exists": true, "policy": "reject" } } }
Syntax Validation
RFC 5322 compliant email syntax checking with support for international addresses.
MX & DNS Checks
Verify domain has valid MX records and can receive email.
SPF/DKIM/DMARC
Check email authentication records to assess domain security.
SMTP Verification
Connect to mail server to verify mailbox actually exists.
Disposable Detection
Identify 500+ disposable and temporary email providers.
Catch-All Detection
Detect domains that accept all emails regardless of recipient.
Typo Suggestions
Suggest corrections for common email typos (gmial → gmail).
Gravatar Check
Detect if email has associated Gravatar profile (indicates real user).
Deliverability Score
0-100 score combining all checks into a single deliverability metric.
Built For
🚀 SaaS Signups
Block fake signups at registration. Catch disposable emails, typos, and invalid addresses before they enter your system.
📨 Email Marketing
Clean your lists before sending. Reduce bounce rates, improve deliverability, and protect your sender reputation.
🗂️ CRM Data Quality
Validate imported contacts and existing records. Keep your CRM clean and your outreach effective.
Simple Pricing
Start free. Upgrade when you need more.
Free
- 100 validations/month
- Syntax + MX checks
- Disposable detection
- Typo suggestions
- Gravatar check
Starter
- 5,000 validations/month
- All free features
- SMTP verification
- Catch-all detection
- SPF/DKIM/DMARC checks
Pro
- 25,000 validations/month
- All starter features
- Header analysis
- Bulk validation endpoint
- Priority processing
Business
- 100,000 validations/month
- All pro features
- Priority support
- Custom integrations
- SLA guarantee
FAQ
Do I need an API key?
The demo above works without one. For production use, sign up for a free account to get your API key — 100 validations/month included.
How accurate is the validation?
We perform 20+ checks including syntax, MX records, SPF/DKIM/DMARC, disposable detection, and optional SMTP verification. The deliverability score combines all checks into a single 0-100 metric.
Do you store or log email addresses?
No. Email addresses are validated in real-time and never stored or logged. We're GDPR compliant and don't share data with third parties.
What's the response time?
Basic validation (syntax + MX) returns in under 100ms. Deep validation with SPF/DKIM/DMARC checks typically takes 200-500ms depending on the domain.
Can I validate emails in bulk?
Yes! Pro and Business plans include the bulk validation endpoint, supporting up to 100 emails per request.