Email Validator API
A developer-focused API to validate emails for syntax, domain existence, MX records, and deliverability signals, enabling safer signups and improved messaging.
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About This Tool
Conceptually, a client sends a request containing the email and optional parameters such as mode (real-time or batch) and strictness. The service performs layered validations, may consult external data sources, and returns a structured JSON response with validity, a deliverability score, detected issues, and remediation guidance.
Who benefits includes developers building signup flows, product teams enforcing data hygiene, and marketing operations seeking clean lists. The tool's value lies in combining fast real-time replies with scalable batch processing, transparent scoring, and privacy-conscious options that help teams reduce bounces while preserving user experience.
Core features include syntax validation, DNS/MX verification, disposable-address detection, per-address scoring, batch validation, and configurable retention controls. Typical use cases cover form validation, lead qualification, list cleansing for campaigns, onboarding pipelines, and data-import validation in web and mobile apps.
How to Use
- Provide inputs: send a request with the target email address and optional parameters such as mode (real-time or batch) and strictness.
- Authenticate: include API key or bearer token according to your integration.
- Send request: call the endpoint with the email payload and optional parameters.
- Review outputs: parse validity, deliverability score, and any issue flags in the JSON response.
- Integrate: use results to gate signups, segment lists, or filter email campaigns.
- Handle errors: respect rate limits, retry logic, and observe privacy controls.
Frequently Asked Questions
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What does the API validate?
Can I validate lists in bulk?
How is privacy handled?
What is the typical response time?
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