Shield Your Inbox
with AI Power
Privacy-first email protection that automatically detects and neutralizes toxic messages. 100% browser-local. Zero data uploaded.
Powerful Protection, Simple Experience
Everything you need to maintain a professional inbox without compromising privacy
AI-Powered Protection
Advanced AI models automatically detect toxic, hostile, or inappropriate emails in real-time.
Smart Rewriting
Transform aggressive messages into professional communication while preserving the core message.
Zero Data Storage
100% browser-local processing. Your emails never leave your device. No servers, no tracking, no data collection.
Multi-Provider Support
Works seamlessly with Gmail, Outlook, Yahoo Mail, ProtonMail, and more email providers.
Free AI Models
Powered by OpenRouter with access to top-tier AI models including Gemini, Llama, and custom options.
Custom Sensitivity
Adjustable toxicity threshold from 4-10. Control how strict the filtering should be for your needs.
And much more... All with complete privacy and zero cost
Your Data Stays Yours
Built with privacy as the foundation, not an afterthought
Zero Remote Storage
Emails stay in your browser
Browser-Only Processing
AI runs locally on your device
No Email Retention
Nothing saved or logged
How Your Data Flows
Email Arrives
In your inbox
AI Analyzes
Locally in browser
Protected
No data sent out
✨ All processing happens in your browser. Zero data leaves your device.
Get Started in Minutes
Simple setup, powerful protection
Install Extension
Add Zu Shield to Chrome in one click. No account required.
Configure AI
Set your OpenRouter API key and choose your preferred AI model.
Adjust Sensitivity
Set toxicity threshold (4-10) to match your comfort level.
Stay Protected
Emails are automatically scanned and toxic content is blurred or rewritten.
Ready to Shield Your Inbox?
Join thousands protecting their email privacy with AI
Add to Chrome — It's Free→⭐ Rated 5/5 · 🔓 Open Source · 🚀 No Account Required
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