Privacy Policy

1 What data does Smart Email Guard access?

Smart Email Guard watches the text you type into your email compose window — the box where you write new emails — on Gmail, Outlook Web, and Yahoo Mail. It reads what you type so it can check for common mistakes before you hit Send.

Specifically, the extension accesses:

• The text content of the compose window (subject line and message body)
• The DOM structure of the compose page, to detect whether a CC field is filled
• The page URL, to determine which email platform you are using (Gmail, Outlook, or Yahoo)

What it does not access: your inbox, received emails, sent emails, contacts list, drafts, calendar, Google Drive, or anything else on the page. The extension only looks at the compose window — and specifically only the text you are actively typing.

2 What data is stored?

Almost nothing. Smart Email Guard stores only your user preferences (which guard checks you have enabled or disabled, and any custom patterns you create). This data is saved in your browser's local storage — the same mechanism websites use to remember your dark-mode preference or language setting.

• User preferences — which checks are on/off, custom patterns you add
• That's it. No email content, no drafts, no contacts, no usage logs.

Your preferences stay on your device. If you uninstall the extension, this data is automatically removed by the browser. We have no way to recover it because we never had it in the first place.

3 What data is shared?

Nothing. To anyone. Ever.

Smart Email Guard has no server, no backend, no cloud component, no analytics service, no error-reporting endpoint, and no third-party integrations. The extension is entirely self-contained — a single package of HTML, CSS, and JavaScript that runs inside your browser.

We do not receive, collect, transmit, or store any of your data. We cannot share what we never receive. There is simply no data pipeline out of the extension.

4 How does the extension work?

Here's the full data flow — it's short, because there isn't much flow:

Step by step:

1. The extension subscribes to text changes in the compose window using the browser's MutationObserver API (built into every modern browser).
2. When you type, the extension runs the text through a set of regex patterns (regular expression rules) to detect phrases like "please find attached" or "here's the link."
3. If a trigger phrase is found but the expected item (file attachment, URL, CC recipient) appears absent, the extension displays a gentle warning message before you send.
4. That's it. At no point does the text leave your browser. The patterns are hardcoded into the extension — there is no remote configuration, no cloud AI, no API calls.

5 Third-party services

There are none. Smart Email Guard does not integrate with any third-party service, API, analytics tool, advertising network, or cloud provider.

The extension does not use:

• Google Analytics, Firebase, or any analytics platform
• Crash reporting or error-logging services (Sentry, Bugsnag, etc.)
• Advertising or tracking networks
• CDN-hosted libraries (all code is bundled locally)
• Remote configuration or feature flags
• Any external API endpoint

If we ever add a Pro payment feature in the future, payment processing will be handled by a standard provider (like Stripe or the Chrome Web Store Payments API) and the privacy implications will be added to this policy before launch. The core extension will remain local-only regardless.

6 Contact

If you have questions about this privacy policy, want to report a concern, or just want to say hi — reach out anytime.

We designed Smart Email Guard to be private by default because that was the simplest way to build it. No accounts, no servers, no data collection — just a helpful extension that runs entirely on your machine.