OpenInbox - Create Temporary Email Instantly

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

As of June 2026, OpenInbox - Create Temporary Email Instantly has 48 users in the Productivity category.

Usersup 1500.0 percent+1500.0%
48
48
Ratingno change0%
— reviews
Reviewsno change0%
Version
1.0.2
Manifest V3

History

13 snapshots

Tracking since Apr 6, 2026.

51.625.5-0.6000000000000014Apr 6, 2026Jun 14, 2026
View as table
DateUsersRatingReviewsVersion
Apr 6, 202631.0.2
Apr 19, 202691.0.2
Apr 29, 202691.0.2
May 4, 202681.0.2
May 9, 2026121.0.2
May 12, 2026151.0.2
May 16, 2026161.0.2
May 20, 2026191.0.2
May 25, 2026241.0.2
May 30, 2026291.0.2
Jun 4, 2026351.0.2
Jun 8, 2026361.0.2
Jun 14, 2026381.0.2
Now481.0.2

Changelog

  • May 4, 2026
    description
    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.
    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.
  • Apr 19, 2026
    description
    Stop giving out your real email address. OpenInbox generates a free disposable inbox in one click — no sign-up, no personal info, no spam ever reaching you.
    
    Whether you're signing up for a free trial, downloading a resource, or verifying an account, OpenInbox keeps your real inbox clean and your identity private.
    
    ⚡ Key Features
    
    ✅ Instant Temp Email — Generate a temporary email address in one click, directly from your browser toolbar
    
    ✅ Auto-Fill Email Fields — Automatically fill email input fields on any website with your disposable address (Alt+Shift+F)
    
    ✅ Real-Time Email Notifications — Get notified the moment a new email arrives, without leaving your current tab
    
    ✅ OTP & Verification Code Detection — Verification codes are automatically detected and highlighted for one-click copying
    
    ✅ Multiple Inbox Management — Switch between several active disposable inboxes from the popup
    
    ✅ Google Sign-In Sync — Sign in with Google to sync your premium inboxes across all devices
    
    ✅ Privacy First — No personal information required. Inboxes auto-delete after expiry — no traces left behind
    
    
    🛡️ Why Use a Temporary Email?
    
    Every time you share your real email, you risk:
    
    Spam and marketing floods
    Data breaches exposing your address
    Being tracked across the web
    OpenInbox acts as a privacy shield. Use a disposable address for anything you don't fully trust, and keep your real inbox reserved for what matters.
    
    💡 Perfect For
    
    - Free trial sign-ups without commitment
    - Downloading gated content, ebooks & guides
    - Verifying accounts on new apps & services
    - QA testing and developer workflows
    - Online shopping with one-time email verification
    - Protecting your identity on forums and communities
    
    🔧 How It Works
    
    1. Click the OpenInbox icon in your toolbar
    2. Your unique temp email address is generated instantly
    3. Use "Auto-Fill" to paste it into any email field on any site
    4. Receive emails and verification codes in real time
    5. The inbox auto-expires — no cleanup needed
    
    🌟 Premium Plans Available
    
    Need longer inbox lifetimes, API access, or custom email aliases? Upgrade to Pro or Business at openinbox.io for extended expiry (up to 30 days), webhooks, and high-volume API access.
    
    🔒 Privacy & Security
    
    OpenInbox is built receive-only. We never send emails on your behalf, never store data after expiry, and all emails are transmitted over encrypted connections. We do not sell your data.
    
    Protect your privacy. Fight spam. Stay anonymous.
    Get OpenInbox free today.
    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.

Permissions & access

Permissions
storageactiveTabscriptingcontextMenuscommandsnotifications
Host access
https://api.openinbox.io/*

Screenshots

OpenInbox - Create Temporary Email Instantly screenshot 1OpenInbox - Create Temporary Email Instantly screenshot 2OpenInbox - Create Temporary Email Instantly screenshot 3OpenInbox - Create Temporary Email Instantly screenshot 4OpenInbox - Create Temporary Email Instantly screenshot 5

About

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.

Technical

Version
1.0.2
Manifest
V3
Size
103KiB
Min Chrome
88
Languages
1
Featured
Yes

Metadata

ID
ajmhajlkipaknaklkkomjchnjmdlpobo
Developer ID
u1dda52bd76d31dc71eb56d8a195a479e
Developer Email
[email protected]
Created
Feb 27, 2026
Last Updated (Store)
May 3, 2026
Last Scraped
Jun 14, 2026
Website
openinbox.io

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Data sourced from the Chrome Web Store · last verified Jun 14, 2026.