Third-party notices

Mail Tools is GPL-3.0-or-later. Runtime components include React and React DOM (MIT), DOMPurify (MPL-2.0 OR Apache-2.0), and the add·ideas Toolbox contract, shell and helpers (their package metadata and corresponding source apply).

The build generates LICENSES/npm-runtime-licenses.txt from the exact lockfile and installed packages. No remote font, icon, script, stylesheet or service is used at runtime.