IsTempMail – Detect and block disposable email addresses

In plain words

IsTempMail detects and blocks disposable, temporary, and fake email addresses to prevent spam, fraud, and free trial abuse. The service offers a simple JSON API that validates email addresses in real-time, returning results that indicate whether a domain is disposable or unresolvable. It's available as a WordPress plugin and includes API libraries for JavaScript and PHP, making it accessible for developers integrating email validation into their applications.

written from the facts on this page · September 2026

From the sources

Disposable email address services are used for spamming, fake registration, free trial abuse, etc. Our service checks for disposable email addresses, so you can block them in realtime. Our API is dead simple to use. Just pass an email and your API token and get the validation result as a JSON object. POST the email address or domain to validate to the check endpoint. You'll get a JSON response with the domain name, disposable email block status and potentially an unresolvable flag. to get you started even faster. We offer API libraries for Javascript (npm package) and a PHP library (github repo) . $ curl https://istempmail.com/api/check/API_TOKEN/gmail.com { "name":"gmail.com",…from istempmail.com

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