Is StopMailing API down?
Current status, daily uptime history and troubleshooting for the StopMailing API (Email).
No, StopMailing is up
StopMailing answered our last daily check (Nov 15, 2026, 13:58 UTC) in 738 ms with HTTP 200.
Checking StopMailing now…
Sending a request from our server.
StopMailing API uptime history
- Uptime
- 100% of 4 checks
- Last check
- Nov 15, 2026, 13:58 UTC
- Response
- 738 ms · HTTP 200
- Last up
- Now
We check StopMailing's listed URL (https://stopmailing.net/developer-guide) once a day. History started when StopMailing was first checked, so new entries show fewer than 30 days.
StopMailing API not working for you?
- A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header.
- If it works from one network but not another, check firewalls, VPNs and regional blocks.
- 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
Kickbox API
Online · 754 msEmail verification API. A free email API by Powered by Kickbox.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 2
mail.gw API
Online · 602 msAPI for creating temporary email accounts.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 3
mail.tm API
Online · 625 msTemporary Email Service. A free email API by Mail.tm.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 4
Vetto API
Online · 1170 msCheck email domains in bulk for disposable providers and dead domains, no key needed.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 5
Cloudmersive Validate API
Online · 174 msValidate email addresses, phone numbers, VAT numbers and domain names.
- 100% uptime (30 days)
- Fast: 174 ms response
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS
StopMailing API status FAQ
Is StopMailing API down right now?
StopMailing answered our last daily check (Nov 15, 2026, 13:58 UTC) in 738 ms with HTTP 200. This page also runs a live check from our server when you open it, so you can see whether StopMailing is responding at this moment.
How do you check whether StopMailing API is up?
Once a day our checker requests StopMailing's listed URL (https://stopmailing.net/developer-guide) 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.
How reliable is StopMailing API?
StopMailing answered 100% of our last 4 daily checks. Above 99% is excellent for a free API; below 95% means you should cache responses and keep a fallback ready.
What can I use if StopMailing API is down?
Free Email APIs that were up at their last check include Kickbox, mail.gw, mail.tm. See the full list of StopMailing alternatives for a comparison.
Why does StopMailing 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 it works from one network but not another, check firewalls, VPNs and regional blocks. Check the provider's documentation, status page or social accounts for planned maintenance or a changed endpoint.