This project is scheduled for launch
Launch date: Monday, October 12, 2026 at 08:00 AM UTC

IsTempMail is a specialized SaaS designed to help businesses and online platforms combat spam, prevent fake registrations, and deter free trial abuse by blocking disposable, temporary, and fake email addresses in real-time. It serves any organization that collects email addresses and needs to ensure the authenticity and longevity of those contacts, such as e-commerce sites, SaaS providers, and community platforms.
IsTempMail is invaluable for businesses looking to maintain data integrity and improve user engagement. For SaaS companies offering free trials, it ensures that users provide genuine email addresses, leading to higher conversion rates and reduced resource drain from fraudulent sign-ups. E-commerce sites can use it to prevent spam registrations and ensure marketing communications reach real customers, improving email campaign effectiveness.
Furthermore, community platforms and membership sites benefit by ensuring their members are reachable and committed, fostering a healthier and more engaged user base. By blocking temporary emails, IsTempMail helps organizations collect more personal and reliable contact information, enabling better long-term communication and reducing the overhead associated with managing fake accounts.
IsTempMail operates on a freemium model, offering a free plan that includes 200 API requests per month, with no credit card required to start. Paid plans are affordably priced, starting at $5/month for 5,000 API requests and scaling up to $50/month for 1,000,000 requests. Custom enterprise plans and discounts for non-profit organizations are also available, providing flexible options for various business needs.
The service is designed for ease of use, featuring a simple JSON API for developers and a user-friendly WordPress plugin for quick integration. The WordPress plugin allows users to install, sign up for an API token, and start blocking temporary emails in just a few clicks. IsTempMail prides itself on being developer-friendly, offering direct access to engineers depending on the plan and providing responsive email support at support@istempmail.com for any technical questions or domain reporting/unblocking requests.
IsTempMail's core functionality is powered by a robust database of over 124,000 disposable email domains, which is continuously updated through automated and manual processes. The service provides a single, simple JSON API endpoint where users can POST an email address or domain to validate. The API returns a JSON response indicating the domain name, disposable email block status, and an unresolvable flag. For faster integration, official API libraries are available for JavaScript (npm package) and PHP (GitHub repo).
IsTempMail provides an essential and highly effective solution for any online platform aiming to improve data quality, reduce spam, and prevent fraudulent activities like free trial abuse. With its comprehensive and constantly updated database, flexible integration options, and developer-friendly approach, it offers significant value in maintaining a clean and reliable user base. Explore IsTempMail today to safeguard your platform against temporary email addresses and ensure genuine user engagement.
Comments will be available once the project is launched.
Gregor Nobis
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