Disposable Email Validator

What this Actor does

Validate email addresses via syntax, MX, SMTP RCPT probe, disposable-domain list, free-mail flag, role-account flag, and catch-all detection. Self-contained — no upstream paid API.

Input example

{
  "emails": [
    "founder@linear.app",
    "user@mailinator.com",
    "info@example.com"
  ],
  "checkSmtp": true,
  "smtpTimeoutMs": 5000,
  "treatCatchAllAsValid": false
}

Input fields

Provide a list of email addresses to validate. Each email is checked for syntax, MX records, optional live SMTP RCPT probe, disposable-domain blocklist, free-mail providers, and role accounts.

• emails (array, user input): Email addresses to validate. Each address is normalized (lowercased, trimmed) and checked independently.
• checkSmtp (boolean, user input): When true, the actor opens a TCP connection to the recipient MX host on port 25 and runs HELO / MAIL FROM / RCPT TO / QUIT. Many cloud providers block outbound port 25; in that case smtpValid is null with reason smtp_blocked.
• smtpTimeoutMs (integer, user input): Per-connection timeout in milliseconds for the SMTP probe.
• treatCatchAllAsValid (boolean, user input): If a domain accepts mail for a known-bogus probe address, it is a catch-all and the target mailbox cannot be confirmed. When true the result is still marked valid; when false catch-all results are marked unknown.

Output dataset

Each successful upstream response is written to the default dataset.

• input: Original input value submitted to the upstream API.
• result: Full upstream API response.

Developer notes

Set DISPOSABLE_EMAIL_VALIDATOR_API_KEY as an Apify secret environment variable. The Actor forwards it as X-API-Key to the upstream API. Use apiBaseUrl only for local or staging QA. Production runs default to the deployed API base URL from service.json. For advanced testing, a requests array can call explicit API paths; normal users should use the service-specific fields above.

Run locally

$apify run

Deploy

$apify push