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Block fake addresses before they get in

A score, a verdict and a correction suggestion for every address: no more ghost accounts and welcome emails that bounce.

  • Sign-up forms
  • Newsletters
  • CRM
  • Online shops

Get a free key

GET

/v1/email/verify

1 credit(s) per call

Checks an email address without any SMTP connection: syntax, DNS, MX, disposable address, role account, likely typo.

Try it online

Address to check (254 characters at most).

Free tool limited to 20 tries per day. With a key, your quota applies.

Result

—

Example request

curl "https://supercalcula.ch/api/v1/email/verify?email=jean.dupont%40gmial.com" \
  -H "Authorization: Bearer sk_live_…"

Response

{
    "ok": true,
    "data": {
        "email": "jean.dupont@gmial.com",
        "normalized": "jean.dupont@gmial.com",
        "syntax_valid": true,
        "domain_exists": true,
        "has_mx": false,
        "disposable": false,
        "role_account": false,
        "free_provider": false,
        "suggestion": "jean.dupont@gmail.com",
        "score": 0.05,
        "verdict": "invalid"
    }
}

Limits and cost

  • Cost : 1 credit(s) per call
  • No SMTP connection: the mailbox is never “pinged”
  • List of more than 9,000 disposable-address services
  • Answer in under 1.5 seconds (depends on DNS)

Full reference in the documentation →