email-validation

name	email_validation
description	Verify email addresses with MX checking. Free. No API key. Use when user ask "is email valid", "check if email is real".

Email Validation

Real-time email address verification with MX record checking.

APIs

mailvalidate.org

• Endpoint: https://mailvalidate.org/api/validate
• Method: GET
• Auth: None (free tier: 20/hour)
• Docs: https://mailvalidate.org/

Parameter	Type	Description
email	string	Email address to validate

disposableemailchecker.com

• Endpoint: https://disposableemailchecker.com/api/check
• Method: GET
• Auth: None
• Docs: https://disposableemailchecker.com/

Example Queries

• "Is this email valid: [e-mail]"
• "Check if [e-mail] is a disposable email"
• "Verify email format and MX records"

Response

{
  "email": "[e-mail]",
  "valid": true,
  "format_valid": true,
  "domain_valid": true,
  "mx_records": ["mail.example.com"],
  "is_disposable": false,
  "is_free_provider": false
}

Use Cases

• Form validation on signup
• Detect disposable/temporary emails
• Verify email deliverability
• Filter free provider emails (gmail, yahoo)

Token Savings

15-30x vs LLM reasoning for email validation.