Mailvalid
Validates email addresses in real time through API, CSV upload, or MCP, with syntax, domain, MX, and SMTP checks.
Improve email deliverability and keep your contact database clean with an email verification platform built for developers, businesses, and marketing teams. MailValid verifies email addresses before they enter your systems, helping reduce bounce rates, eliminate invalid contacts, and improve campaign performance through real-time API validation and bulk list cleaning.
Turn Email Lists Into Verified Contacts
Validate email addresses instantly through an API, web app, or bulk upload before they affect your marketing campaigns, signup flows, or CRM data.
Whether you're processing user registrations, importing lead lists, or cleaning existing databases, MailValid provides fast and reliable email verification with detailed validation results.
Key Features
Real-Time Email Verification API
Validate email addresses before accepting them into your application.
Verify:
- Email syntax
- Domain validity
- MX records
- Mailbox availability
- SMTP responses
through a simple REST API.
Bulk Email List Cleaning
Upload large contact lists and verify thousands of addresses at once.
Support includes:
- CSV uploads
- TXT uploads
- Up to 10,000 emails per job
- Batch verification
- CSV and JSON exports
to simplify database cleanup.
Advanced Email Intelligence
Receive detailed validation insights beyond basic verification.
Identify:
- Disposable email addresses
- Catch-all domains
- Role-based addresses
- Free email providers
- Validation confidence
to make better decisions about your contacts.
MCP Integration
Connect email verification to AI-powered workflows.
Compatible with:
- Claude
- Cursor
- MCP clients
- AI agents
- Developer workflows
for automated validation inside modern AI tools.
Fast & Developer-Friendly API
Integrate email verification with minimal development effort.
Features include:
- JSON requests
- JSON responses
- REST API
- Language examples
- Single verification endpoint
for quick implementation.
Flexible Credit System
Pay only for the email verifications you use.
Benefits include:
- Credits that never expire
- 100 free verification credits
- No credit card required
- Usage-based pricing
- Scalable verification
for businesses of every size.
Built for Reliable Email Validation
MailValid is designed to help developers and businesses improve email quality while reducing bounced emails and maintaining cleaner customer databases.
Key benefits include:
- Real-time email verification
- Bulk list cleaning
- Developer-friendly API
- AI workflow integration
- Improved deliverability
Built For
- Developers
- SaaS Companies
- Marketing Teams
- CRM Administrators
- Sales Teams
- Data Operations Teams
Common Use Cases
- Signup form validation
- CRM cleanup
- Lead verification
- Email list cleaning
- Checkout validation
- Data pipeline validation
Why It Matters
Invalid email addresses lead to higher bounce rates, poor sender reputation, and wasted marketing efforts. Manually cleaning contact lists or relying on basic format validation isn't enough to maintain high-quality customer data. MailValid combines syntax checks, domain validation, MX record verification, SMTP mailbox checks, and advanced email intelligence into one platform, allowing businesses to verify addresses before they enter their systems and maintain cleaner, more reliable contact databases.
Verify Every Email Before It Matters
Validate email addresses in real time, clean bulk contact lists, integrate verification into your applications, and improve deliverability with a fast, developer-friendly email verification platform.
