OpenInbox - Create Temporary Email Instantly

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

OpenInbox — Disposable Email & Temp Mail Generator Stop giving out your real email. OpenInbox gives you a disposable email address in one click, right from your browser toolbar — no new tab, no website, no hassle. The fastest temporary email extension for Chrome. ONE-CLICK TEMP EMAIL GENERATION Click the toolbar icon and a fresh disposable email address is ready in under a second. Every inbox is fully functional and receives real emails. Use it for signups, free trials, verifications, newsletter subscriptions, or anything that asks for an email you don't want to keep. When the inbox expires, everything is permanently and automatically deleted — no trace left behind. AUTO-FILL EMAIL FIELDS ON ANY SITE OpenInbox detects email input fields on any webpage and fills them instantly with your temporary address. Land on a signup form, click Auto-fill, and you're done. No copying, no pasting, no switching tabs. Works on every site — SaaS trials, e-commerce checkouts, forums, newsletters, and more. REAL-TIME EMAIL NOTIFICATIONS The moment an email arrives in your disposable inbox, you get a desktop notification. Verification codes, OTPs, and confirmation links appear instantly inside the extension popup. No refreshing needed — OpenInbox polls your inbox automatically and highlights new messages the second they land. MANAGE MULTIPLE DISPOSABLE INBOXES Run several temporary email addresses simultaneously and switch between them in one click. Perfect for developers testing multi-user flows, QA engineers running parallel test cases, or anyone who needs more than one throwaway email address at a time. Inbox history is saved so you can restore a previous address anytime. BUILT FOR DEVELOPERS & QA ENGINEERS OpenInbox is the browser companion to a full disposable email API platform. The same backend powers a REST API for CI/CD pipelines, automated testing, and staging environments — complete with webhook support for real-time email triggers. Use the extension for manual testing and the API for programmatic workflows. Both share the same infrastructure. WHY OPENINBOX? ✓ Lightweight — under 500 KB, zero browser performance impact ✓ Privacy-first — no tracking, no analytics, no data sold to third parties ✓ Auto-delete — inboxes and emails permanently removed after expiration ✓ OTP detection — verification codes highlighted and ready to copy ✓ Reliable infrastructure — powered by Cloudflare for fast global delivery ✓ Works on every site — no restrictions, no blocklists FREE FOREVER. PRO FOR POWER USERS. The extension is free with no time limit. Generate disposable inboxes, auto-fill forms, and receive emails at no cost. Upgrade to Pro for: — Extended inbox lifetime (7 days vs 1 hour) — Up to 10 simultaneous inboxes — Custom email aliases — Custom domain support — Full REST API access with webhooks — 7-day free trial included — no commitment Whether you're a developer testing email verification flows, a privacy-conscious user avoiding inbox spam, or a QA engineer automating signups — OpenInbox is the disposable email generator that lives where you work: your browser. Install free. Stop handing out your real email.