Fast, Accurate Email Checker API You Can Trust
Protect your sender reputation, land in more inboxes, and maximize ROI on every email you send.
MCP Available
Trusted by many companies
Join serious businesses that rely on our email validation service to improve their deliverability and reduce bounce rates.
"The API integration was seamless and the results speak for themselves. Our bounce rate dropped to almost zero."
top rated, trusted partner in email verification
Why Choose Our Email Validation?
Lightning Fast
Validate emails in milliseconds with our optimized infrastructure
Highly Accurate
99.9% accuracy rate with advanced validation algorithms
Easy Integration
Simple API integration with comprehensive documentation
Fair Pricing
We charge only once for every validated email address
Expert Support
24/7 support from our email validation experts
Secure & Reliable
Enterprise-grade security with 99.9% uptime guarantee
How Email Checker API works
- Format & Syntax CheckWe ensure the email is properly formatted (no spaces, single β@β, valid characters and domain format). Invalid formats are flagged immediately.
- Domain & DNS ValidationWe check the domain and its MX records to confirm it can receive emails. Misspelled or non-existent domains are marked undeliverable, with smart typo correction suggestions.
- Disposable Email DetectionWe detect temporary or throwaway email providers using a frequently updated list, helping you filter out low-quality or spam-prone contacts.
- SMTP Server VerificationOur checker discreetly pings the mail server via SMTP to confirm whether the mailbox exists β without ever sending a real email.
- Mailbox ConfirmationIf the mailbox is valid, we mark it as Deliverable. Invalid or risky responses (catch-all, unknown, mailbox full) are clearly flagged so you know the status of every email.
- High AccuracyPowered by an industry-grade engine, our process delivers up to 99% accuracy across syntax, domain, and mailbox checks.
- Real-Time ResultsEvery verification runs instantly with minimal caching, ensuring you always get the most current results.
- Stealth & SafetyNo test messages are ever sent β verification is completely invisible and non-intrusive for the email owner.
Why You Need an Email Checker
Turn your ideas into reality with our Email Checker. With a lot of powerful features, we guarantee simplicity and clarity.
Improve Email Deliverability
Stop your campaigns from landing in spam due to invalid addresses. Our tool helps you send only to real, reachable emails, which boosts your inbox placement and open rates. By avoiding bad emails, you'll maintain a high sender score and see more emails delivered to actual customers.
Reduce Bounce Rates
High bounce rates can hurt your marketing efforts and even damage your ability to reach inboxes. The Email Checker identifies fake, expired, or misspelled addresses before you send, so you can remove them and avoid bounces that harm your sender reputation.
Protect Your Sender Reputation
Consistently emailing invalid accounts can make you look like a spammer to email providers. Keeping your list clean with our verifier safeguards your domain's reputation. A healthier sender reputation means higher deliverability for all your future emails.
Save Money & Effort
Every email you send to a dead address is wasted effort β and if you're using an email service provider, it may count toward your subscriber quota or sending limits. By verifying emails in advance, you save on email marketing costs and focus your resources on real leads.
Improve Email Deliverability
Stop your campaigns from landing in spam due to invalid addresses. Our tool helps you send only to real, reachable emails, which boosts your inbox placement and open rates. By avoiding bad emails, you'll maintain a high sender score and see more emails delivered to actual customers.
Protect Your Sender Reputation
Consistently emailing invalid accounts can make you look like a spammer to email providers. Keeping your list clean with our verifier safeguards your domain's reputation. A healthier sender reputation means higher deliverability for all your future emails.
Reduce Bounce Rates
High bounce rates can hurt your marketing efforts and even damage your ability to reach inboxes. The Email Checker identifies fake, expired, or misspelled addresses before you send, so you can remove them and avoid bounces that harm your sender reputation.
Save Money & Effort
Every email you send to a dead address is wasted effort β and if you're using an email service provider, it may count toward your subscriber quota or sending limits. By verifying emails in advance, you save on email marketing costs and focus your resources on real leads.
Powerful API for Developers
Simple Integration
Get started with our email validation API in minutes. Clean, well-documented endpoints with consistent responses.
Key Features
- Real-time validation
- Comprehensive validation
- JSON responses
- High volume processing
- RESTful design
Example Responses
{
"valid_syntax": 1,
"valid_dns": 1,
"has_mailbox": 1,
"is_catch_all": 0,
"is_disposable": 0,
"is_role": 0,
"status": "deliverable",
"description": "This email address is valid and can receive emails reliably.",
"validation_completed": true
}{
"valid_syntax": 1,
"valid_dns": 1,
"has_mailbox": 1,
"is_catch_all": 1,
"is_disposable": 0,
"is_role": 0,
"status": "risky",
"description": "This email address is valid but may have deliverability issues.",
"validation_completed": true
}{
"valid_syntax": 0,
"valid_dns": 0,
"has_mailbox": 0,
"is_catch_all": 0,
"is_disposable": 0,
"is_role": 0,
"status": "undeliverable",
"description": "This email address cannot receive emails or has validation issues.",
"validation_completed": true
}Supercharge Your AI Development Workflow
AI-Powered Development
Use natural language to validate emails, process bulk files, and check task status directly from your AI assistant.
Supported Platforms
Cursor
AI-first code editor
Windsurf
Next-gen AI IDE
Available Tools
Validate single email addresses with comprehensive checks
Process large email lists with file upload support
Check the progress of bulk validation tasks
Retrieve account details and usage statistics
Key Benefits
- Real-time validation in your workflow
- Bulk file processing capabilities
- Seamless AI integration
- Enterprise-grade accuracy
Example Usage
{
"mcpServers": {
"email-checker": {
"command": "node",
"args": ["mcp-server.js"],
"env": {
"API_KEY": "your-api-key"
}
}
}
}// Single email validation:
"Validate user@example.com"
// Bulk validation:
"Upload emails.csv for bulk validation"
// Check task progress:
"Check status of task abc-123-def"
// Available tools:
β’ validate_email
β’ bulk_validate_emails
β’ get_task_status
β’ get_account_infoFrequently Asked Questions
Everything you need to know about our Email Checker service.