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Is It Disposable detects and blocks disposable emails with daily updates and privacy-focused accuracy.
Is It Disposable is a disposable email detection service designed to stop temporary and throwaway addresses before they enter a product’s signup flow. Unlike static blocklists that become outdated quickly, it uses a dataset refreshed daily together with DNS-level validation to identify new disposable domains without probing mailboxes over SMTP. Businesses can integrate it through a drop-in JavaScript snippet or a REST API and receive more than a simple yes-or-no result, including signals for undeliverable domains, privacy relays, public providers, role accounts, spam risk, and masked routing. Each signal can be mapped to allow, warn, or block, while custom allowlists and blocklists take priority. The service is privacy-focused, storing only the email domain by default, and it fails open during outages or quota limits so signup forms keep working. It is available immediately with a free plan and no waitlist.
