Email Spam Tester

Send a test message and get a spam score, 41 checks with RFC citations and a fix plan.

Email Spam Tester 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.

Authentication: None required
HTTPS: Yes
CORS: Yes
Category: Email

Visit documentation ↗email-spam-tester.com

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Email Spam Tester API alternatives

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Email Spam Tester API FAQ

Is the Email Spam Tester API free?

Yes. The Email Spam Tester 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.

Does the Email Spam Tester API require an API key?

No. The Email Spam Tester API requires no authentication, so you can start making requests without signing up.

Can I call the Email Spam Tester API from the browser?

Yes. The Email Spam Tester API supports CORS, so front-end JavaScript can call it directly.

Does the Email Spam Tester API support HTTPS?

Yes. The Email Spam Tester API is served over HTTPS, so it's safe to use in production.