# CleanTempMail > Create a free temporary email instantly with hundreds of active domains. No sign-up required—keep your real inbox clean, reduce spam, and switch addresses anytime. CleanTempMail is a temporary email service: use an address on one of its public domains, receive mail immediately, and read it on the website, in the iOS app, in the Chrome extension or through a JSON API. - There is no mailbox registration: any valid prefix on an active domain receives mail, so compose an address locally or generate one, then read its inbox. - Send your key in the X-API-Key request header. Keep paid keys on your server; do not expose them in browser code, public repositories, query strings, or logs. `ct-test` is a shared, limited test key. - Addresses are temporary: do not use them for accounts you need to keep. ## Docs - [API reference](https://cleantempmail.com/llms-full.txt): endpoints, curl examples, quota rules and HTTP errors, in Markdown - [API and pricing](https://cleantempmail.com/api): plans, one-time key purchase and key recovery - [Active domains](https://cleantempmail.com/api/domains): JSON list of the domains currently accepting mail; no API key needed ## Optional - [Apps](https://cleantempmail.com/apps): the iOS app, the Chrome extension and related tools - [Help](https://cleantempmail.com/help) - [Terms](https://cleantempmail.com/terms)