Support

Email Slayer is a privacy-first desktop app that analyzes your Gmail inbox to show you who sends you the most email. It helps you understand your inbox patterns, block unwanted senders, and bulk-delete emails you don't need.

All processing happens locally on your computer — no email data is ever sent to any external server.

macOS (Intel and Apple Silicon), Windows (64-bit), and Linux (AppImage, .deb).

No. Email Slayer only reads email metadata (sender, date, subject, size). It never accesses the actual email body content or attachments.

See our Privacy Policy for full details.

Common causes:

• "Unverified app" warning — Click "Advanced" then "Go to Email Slayer (unsafe)" to proceed. This appears because the app uses sensitive Gmail scopes.
• Browser blocks popup — Email Slayer opens your default browser for login. Ensure popups aren't blocked.
• Wrong Google account — The browser may auto-select an account. Use an incognito window to choose the correct account.
• Firewall blocking localhost — Email Slayer uses a local server (127.0.0.1) for the OAuth callback. Ensure your firewall allows this.

Still stuck? Export diagnostics from Settings and email them to support@emailslayer.com.

Large inboxes take a while to scan. At roughly 30 messages per second, a 100,000-email inbox takes about an hour. Email Slayer is deliberately paced to stay safely under Gmail's API quota and avoid triggering rate limits.

A few things that help:

• Leave it running in the background. Scans are checkpointed every 1,000 messages, so you can minimise the window and carry on with other work.
• Pause and resume any time. If you need to close the app or reboot, open History when you come back and click Resume — it picks up exactly where it left off.
• A faster network doesn't help much. The bottleneck is Gmail's API, not your connection.

1. Check for updates — Settings → Check for Updates
2. Export diagnostics — Settings → Diagnostics → Export diagnostics. This produces a ZIP file with logs and environment info.
3. Report the issue — Email the ZIP to support@emailslayer.com

Diagnostics include logs and environment info but never include email content or personal data.

1. Open Settings
2. Click Check for Updates
3. If an update is available, click Download from website — this opens the Email Slayer download page in your browser
4. Download and install the new version over the existing one

Auto-updates are disabled in development builds.

All data is stored locally on your device:

• macOS: ~/Library/Application Support/Email Slayer/
• Windows: %APPDATA%\Email Slayer\
• Linux: ~/.config/Email Slayer/

Full reset (recommended): Go to Settings → Data management and click Reset everything. This deletes all scan data, signs you out, and restores default settings — the app restarts as if freshly installed.

Log out only: Use the Log out button at the bottom of the sidebar. This removes your Google connection but keeps your scan history and results on disk.

Manual deletion: Quit the app and delete the data folder listed above.

Revoke Google access: Go to Google Account Permissions, find "Email Slayer", and click "Remove Access".

Yes. Scans are checkpointed every 1,000 messages. If the app closes or you stop the scan, go to Scan or History and click Resume.