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Email Validator by LifeStep API alternatives

Validate email syntax and MX, detect disposable/role addresses, suggest typo fixes. If it doesn't fit your project, here are the 10 best free Email APIs to use instead in 2026, out of 36 in the directory.

For reference, Email Validator by LifeStep API: No API key needed · Callable from the browser (CORS) · HTTPS.

  1. 1Kickbox logo

    Kickbox API

    Online · 1026 ms

    Email verification API. A free email API by Powered by Kickbox.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS
    No authHTTPSCORS
  2. 2mail.gw logo

    mail.gw API

    Online · 546 ms

    API for creating temporary email accounts.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS
    No authHTTPSCORS
  3. 3mail.tm logo

    mail.tm API

    Online · 454 ms

    Temporary Email Service. A free email API by Mail.tm.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS
    No authHTTPSCORS
  4. 4MailSenpai DNS Check logo

    MailSenpai DNS Check API

    Online · 805 ms

    Check a domain's SPF, DKIM, DMARC and MX records and get what to fix, with the values to publish.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS
    No authHTTPSCORS
  5. 5Disify logo

    Disify API

    Online · 1344 ms

    Validate and detect disposable and temporary email addresses.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS
    No authHTTPSCORS
  6. 6DropMail logo

    DropMail API

    Online · 565 ms

    GraphQL API for creating and managing ephemeral e-mail inboxes.

    • No API key needed
    • HTTPS
    No authHTTPSCORS ?
  7. 7Guerrilla Mail logo

    Guerrilla Mail API

    Online · 533 ms

    Disposable temporary Email addresses. A free email API by Guerrilla Mail API.

    • No API key needed
    • HTTPS
    No authHTTPSCORS ?
  8. 8Best Temp Mail logo

    Best Temp Mail API

    Online · 598 ms

    Disposable inboxes for automated email testing, with OTP extraction.

    • No API key needed
    • HTTPS
    No authHTTPSNo CORS
  9. 9Cloudmersive Validate logo

    Cloudmersive Validate API

    Online · 622 ms

    Validate email addresses, phone numbers, VAT numbers and domain names.

    • Callable from the browser (CORS)
    • HTTPS
    apiKeyHTTPSCORS
  10. 10EmailJS logo

    EmailJS API

    Online · 505 ms

    Send emails directly from client-side JavaScript without a backend server.

    • Callable from the browser (CORS)
    • HTTPS
    apiKeyHTTPSCORS

Email Validator by LifeStep API vs alternatives

Email Validator by LifeStep API compared with its alternatives
APIAPI keyHTTPSCORSUptimeResponseRating
Email Validator by LifeStepNoYesYesUp1178 msNot rated
Kickbox logoKickboxNoYesYesUp1026 msNot rated
mail.gw logomail.gwNoYesYesUp546 msNot rated
mail.tm logomail.tmNoYesYesUp454 msNot rated
MailSenpai DNS Check logoMailSenpai DNS CheckNoYesYesUp805 msNot rated
Disify logoDisifyNoYesYesUp1344 msNot rated
DropMail logoDropMailNoYesUnknownUp565 msNot rated
Guerrilla Mail logoGuerrilla MailNoYesUnknownUp533 msNot rated
Best Temp Mail logoBest Temp MailNoYesNoUp598 msNot rated

See also: best Email APIs · all Email APIs

Email Validator by LifeStep API alternatives FAQ

What is the best free alternative to the Email Validator by LifeStep API in 2026?

The top-ranked free alternatives to the Email Validator by LifeStep API are Kickbox API, mail.gw API and mail.tm API, all in the Email category. Rankings combine access (API key, HTTPS, CORS), daily uptime checks and developer ratings.

How many Email APIs are similar to the Email Validator by LifeStep API?

The directory lists 36 other free Email APIs. This page compares the top ones side by side.