
Disposable inboxes for end-to-end tests that wait for the email and extract OTP codes.
inboxsink API is a free Email API that requires apiKey authentication, is served over HTTPS and does not support CORS, so it should be called from a server.
Disposable email API for Playwright, Cypress and Selenium. One route blocks until the email lands and returns the OTP already extracted. 1,000 free calls a month.
Details from inboxsink.com.

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Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Free email validation: MX check, disposable detection, syntax
Validate email addresses
The inboxsink API is provided by inboxsink (inboxsink.com). Disposable email API for Playwright, Cypress and Selenium. One route blocks until the email lands and returns the OTP already extracted. 1,000 free calls a month.
Yes. The inboxsink 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.
Yes. The inboxsink API uses apiKey authentication, so you need to register for credentials before making requests.
Not directly. The inboxsink API does not allow CORS, so call it from a server, serverless function or proxy instead of front-end JavaScript.
Yes. The inboxsink API is served over HTTPS, so it's safe to use in production.