TrustLookup
Verify email syntax, MX and live mailbox; detect disposable, role and catch-all addresses
Disposable email addresses with a free, no-signup REST API.
StopMailing API is a free Email API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
Online · 738 msTested Nov 15, 2026 · checked dailyIs it down? Status & uptime
Disposable email API: create temporary email addresses and read their messages with a free REST API. No signup or key needed. curl examples inside.
Details from stopmailing.net.

Validate emails before they bounce
mailboxlayer checks syntax, MX records and SMTP, and flags disposable addresses, with a free plan to start.
Verify email syntax, MX and live mailbox; detect disposable, role and catch-all addresses
Stop spam signups: block disposable and invalid emails and suggest typo fixes. 500 free a month
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The StopMailing API is provided by StopMailing (stopmailing.net). Disposable email API: create temporary email addresses and read their messages with a free REST API. No signup or key needed. curl examples inside.
Yes. The StopMailing API is listed in the Email category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The StopMailing API requires no authentication, so you can start making requests without signing up.
Yes. The StopMailing API supports CORS, so front-end JavaScript can call it directly.
Yes. The StopMailing API is served over HTTPS, so it's safe to use in production.
Show that StopMailing is listed on Public APIs. The badge displays its developer rating once it has one.
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