Download the executable and run it to install (includes all the required files). Or, download the extension separately as well and manually set up as described at https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Native_messaging
- Supports native Windows 10 notifications for incoming mails
- Persistent notifications, ability to launch Thunderbird from notification
- Support for Thunderbird 78+
- Rich customization
- Easy install and uninstall process
- Free, libre, open source software
Tested only on x64, so only x64 binaries are provided.
Update 28/08/2021: Changed executable so it listens on loopback interface only (prevents abuse from other computers in your LAN).