IsTempMail is a service that detects and blocks disposable, temporary, and fake email addresses in real-time. It helps businesses reduce spam, prevent fraudulent registrations, and stop free trial abuse. The service is available via a simple JSON API and a free WordPress plugin.
Key Features
- Huge Database: Over 124,000 known disposable email domains are maintained and continuously updated.
- Simple JSON API: A single endpoint accepts an email or domain and returns a JSON response indicating whether it is blocked or unresolvable.
- WordPress Plugin: A free plugin allows WordPress site owners to block temporary emails with just a few clicks.
- API Libraries: Official libraries for JavaScript (npm) and PHP are available to speed up integration.
- Real-Time Updates: New disposable email providers are added daily, with 5-20 new domains added per day.
- Fair Pricing: A free plan with 200 API requests per month is available, with paid plans starting at $5/month for 5,000 requests.
Use Cases
- SaaS Companies: Prevent free trial abuse by blocking users who sign up with temporary email addresses.
- E-commerce Sites: Reduce fake registrations and spam accounts that could lead to fraudulent orders.
- Community Platforms: Ensure that only genuine users with real email addresses can join and participate.
What Makes It Stand Out IsTempMail offers a large, actively maintained database of disposable email domains, a developer-friendly API with official libraries, and a free WordPress plugin for easy integration. Its pricing is transparent and affordable, with a free tier available.
Summary IsTempMail provides a reliable, easy-to-integrate solution for blocking disposable email addresses, helping businesses protect their platforms from spam, fraud, and abuse.


