Magic Clipper for Gemini Notebook (ex-NotebookLM)

Using Google Gemini Notebook (ex-NotebookLM) and struggling to organize your notebooks, manage folders, or move sources from one notebook to another?

Magic Manager enhances the Gemini Notebook interface with all the essential productivity and organization features missing from the native experience.

Key Features:

1-Click Cross-Notebook Transfer: Easily copy or move sources between notebooks directly inside the interface without manual re-uploading.
Smart Source Merging: Combine multiple related sources or notes into a single structured document to optimize your notebook source limits.
Duplicate Detection & Cleanup: Instantly detect and remove duplicate sources to keep your workspace tidy and efficient.
Instant Search & Filtering: Find any source across your notebooks in seconds with origin filters (Drive, Web, YouTube, etc.).
Visual Origin Badges: See at a glance where each document came from.
100% Local & Privacy-First: No third-party servers, zero data tracking, and no telemetry. Operates entirely in your Firefox browser via standard WebExtension MV3 APIs.

Take full control of your AI second brain on Firefox today!

Support and Bug Reports:
If you encounter any bugs or have feature suggestions, please report them on our official GitHub repository:
https://github.com/mtfkarukera/mc4nblm-thunderbird/issues

Requirements and Limitations:
- An active Google session with access to Google Gemini Notebook / NotebookLM is required.
- The extension operates strictly within your local Thunderbird client.

Privacy and Security:
- 100% Local Processing: No data, emails, or credentials are ever sent to external third-party servers.
- Zero Tracking: No telemetry, no analytics, no remote code execution.

Roadmap:
- Support for additional attachment formats.
- Advanced source tagging and custom presets.

Developed by MTF Karukera as part of the magic-softs productivity suite.

Privacy Policy — Magic Clipper for NotebookLM

What this add-on does with your data
This add-on transmits data from your computer for one purpose only: importing email content that you explicitly select into your own Google NotebookLM account (notebooklm.google.com). Nothing is ever transmitted automatically or in the background — every import requires a deliberate click on an import button.

Data transmitted (only when you click an import button)

The body of the currently displayed email, converted to PDF or Markdown, including its metadata (subject, sender, recipients, date).
The attachments you have explicitly ticked for import.
The optional "research intention" note you typed.
The name you typed when creating a new notebook.

All of this is sent exclusively to Google's NotebookLM service, into your own Google account. No data ever transits through the developer's servers or any third party — there are none.

Authentication
The add-on never asks for, sees, or stores your Google password. You sign in to Google yourself, on Google's own page, in a tab opened inside Thunderbird. To authenticate its requests, the add-on reads the Google session cookies already present in Thunderbird's cookie store and periodically refreshes them with Google. Cookie values are never copied into the add-on's storage, never logged, and never sent anywhere except to Google itself.

Data stored locally
Only two preferences are kept in Thunderbird's local extension storage: the index of your active Google account and the ID of the last notebook you used. No email content, no attachments, no cookies, no tokens are persisted. The last generated PDF/Markdown is held in memory only (for the optional "Download" button) and is discarded when Thunderbird closes.

What is NOT collected
No telemetry, no analytics, no usage statistics, no crash reports, no advertising identifiers. The developer receives nothing at all. Diagnostic logging is disabled in release builds.

Your responsibility
Content you import becomes subject to Google's Privacy Policy and the NotebookLM terms, like any document you upload to NotebookLM yourself.

Source code & contact
The source code is publicly visible at github.com/mtfkarukera/mc4nblm-thunderbird. Questions: admin@magic-clipper.mtfk.fr.

This add-on is not affiliated with or endorsed by Google. NotebookLM is a trademark of Google LLC.

Some add-ons ask for permission to perform certain functions (example: a tab management add-on will ask permission to access your browser’s tab system).

Since you’re in control of your Thunderbird, the choice to grant or deny these requests is yours. Accepting permissions does not inherently compromise your browser’s performance or security, but in some rare cases risk may be involved.

Add-ons

Welcome to Thunderbird Add-ons.

On the go?

Magic Clipper for Gemini Notebook (ex-NotebookLM) 1.5.1

by MTF Karukera

About this Add-on

Developer’s Comments

Version Information

Version 1.5.1 Released July 31, 2026 270.7 KiB Works with Thunderbird 115.0 and later