The Korppi Mail browser extension brings the same zero-disk privacy to every signup form on the web. It generates temporary inboxes from your toolbar, auto-fills verification codes, and shields your real address — without ever leaving the page you're on.
One Click, Every Time
- Click the toolbar icon → fresh address ready, copied to your clipboard
- Press
Alt+Shift+Mon any page → address dropped into the focused email field - Right-click an email field → "Generate Korppi email" entry
- A subtle floating button appears on email inputs across the web
Auto-Fill OTP Codes
When an email arrives at your temporary address, the extension parses the body, detects 4–8 digit verification codes, magic-link tokens, and confirmation codes — and drops the result straight into the OTP field of the page you're on. No tab switching, no copy-paste, no friction.
Real-Time Inbox
See incoming messages in the popup, pushed live via Server-Sent Events. Click any code to copy, click any link to open, or click "Open in Browser" to view the full inbox at korppimail.com.
Privacy Guarantees
- No tracking, no analytics, no third-party scripts. The only network request the extension makes is to
korppimail.com - No accounts. Active session and preferences live in
chrome.storage.localand never leave your device - HTTPS only. The manifest's
host_permissionsare pinned to HTTPS - Strict CSP. No inline scripts, no remote code, no surprises
- Open source. Every line of code is on GitHub
Bilingual
English and Brazilian Portuguese, picked automatically from your browser locale. More translations welcome via pull request.
Compatibility
Manifest V3. Works on Chrome, Edge, Brave, Opera, Vivaldi, Arc — any modern Chromium-based browser. A Firefox port is on the roadmap.
Get the Extension
The extension is open source under MIT. The repository, including a step-by-step development guide, lives on GitHub:
github.com/Korppi-Mail/Korppi-Mail-Extension
The Chrome Web Store listing is being prepared. Until it goes live, you can load the extension as an unpacked developer build by following the instructions in docs/DEVELOPMENT.md in the repo.
Contact
Issues / feature requests: GitHub Issues
General: [email protected]