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Is MailCheck.ai API down?

Current status, daily uptime history and troubleshooting for the MailCheck.ai API (Email).

No, MailCheck.ai is up

MailCheck.ai answered our last daily check (Oct 24, 2026, 12:25 UTC) in 2357 ms with HTTP 200.

Checking MailCheck.ai now…

Sending a request from our server.

MailCheck.ai API uptime history

30 days agoLatest check
Uptime
2 checks so far
Last check
Oct 24, 2026, 12:25 UTC
Response
2357 ms · HTTP 200
Last up
Now

We check MailCheck.ai's listed URL (https://www.mailcheck.ai/#documentation) once a day. History started when MailCheck.ai was first checked, so new entries show fewer than 30 days.

MailCheck.ai API not working for you?

  1. A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header.
  2. If calls fail only in the browser with a CORS error, MailCheck.ai may not allow cross-origin requests. Call it from your server instead.
  3. If it works from one network but not another, check firewalls, VPNs and regional blocks.
  4. Check the provider's documentation, status page or social accounts for planned maintenance or a changed endpoint.

Email APIs up at their last check

  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. 5

    Email Validator by LifeStep API

    Online · 1178 ms

    Validate email syntax and MX, detect disposable/role addresses, suggest typo fixes.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS
    No authHTTPSCORS

Compare all MailCheck.ai alternatives · APIs down right now

MailCheck.ai API status FAQ

Is MailCheck.ai API down right now?

MailCheck.ai answered our last daily check (Oct 24, 2026, 12:25 UTC) in 2357 ms with HTTP 200. This page also runs a live check from our server when you open it, so you can see whether MailCheck.ai is responding at this moment.

How do you check whether MailCheck.ai API is up?

Once a day our checker requests MailCheck.ai's listed URL (https://www.mailcheck.ai/#documentation) and records whether it answers within 15 seconds. Answers like 401 (needs a key), 403 (blocks bots) or 429 (rate-limited) count as up, because the server responded. The listed URL is often the documentation page, so an API endpoint can occasionally fail while its docs stay up.

What can I use if MailCheck.ai API is down?

Free Email APIs that were up at their last check include Kickbox, mail.gw, mail.tm. See the full list of MailCheck.ai alternatives for a comparison.

Why does MailCheck.ai API work for others but not for me?

A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header. If calls fail only in the browser with a CORS error, MailCheck.ai may not allow cross-origin requests. Call it from your server instead. If it works from one network but not another, check firewalls, VPNs and regional blocks.