OpenInbox - Create Temporary Email Instantly

Free temporary email generator. Create disposable inboxes instantly, auto-fill forms & receive verification emails without spam.

OpenInbox — the disposable email Chrome extension. Get a temporary inbox in one click, right from your browser toolbar. Tired of handing out your real email to every signup form, newsletter, and free trial? OpenInbox is a privacy email tool that generates disposable email addresses instantly — no new tab, no website visit, no hassle. ONE-CLICK INBOX GENERATION Click the toolbar icon and a fresh temporary email address is ready in under a second. Each inbox is fully functional and receives real emails. Use it for signups, verifications, downloads, or anything that asks for an email you don't want to keep. When the inbox expires, everything is permanently deleted. AUTO-FILL EMAIL FIELDS OpenInbox detects email input fields on any webpage and auto-fills them with your disposable address. Land on a signup page, click Auto-fill, and you're done. No copying, no pasting, no switching tabs. It works on every site — forums, SaaS trials, e-commerce checkouts, newsletters, and more. REAL-TIME NOTIFICATIONS The moment an email lands in your temporary inbox, you get a desktop notification. Verification codes, OTPs, and confirmation links appear instantly in the extension popup. No need to keep refreshing — OpenInbox polls your inbox every few seconds and highlights new messages automatically. MANAGE MULTIPLE INBOXES Run several disposable inboxes at the same time and switch between them with one click. This is perfect for developers testing multi-user flows, QA engineers running parallel test cases, or anyone who needs more than one throwaway address at a time. Your inbox history is saved so you can restore a previous address if needed. BUILT FOR DEVELOPERS OpenInbox is the temp email browser companion to a full developer platform. The same service powers a REST API for CI/CD pipelines, automated testing, and staging environments. Use the extension for manual testing and the API for programmatic workflows — they share the same backend. WHY OPENINBOX? * Lightweight: under 500 KB, zero impact on browser performance * Privacy-first: no tracking, no analytics, no data sold * Auto-delete: inboxes and emails are permanently removed after expiration * OTP detection: verification codes are highlighted and easy to copy * Cloudflare-powered infrastructure for fast, reliable delivery FREE & PRO The extension is free forever. Generate inboxes, auto-fill forms, and receive emails at no cost. Upgrade to Pro for extended inbox lifetimes (7 days instead of 1 hour), up to 10 simultaneous inboxes, custom email aliases, custom domains, and full API access with webhooks. Whether you're a developer testing email verification flows, a privacy-conscious user avoiding spam, or a QA engineer running automated signups — OpenInbox is the temporary email generator that lives in your browser. Install now and stop giving out your real email.