I've updated the file in the first post to v1.3
- Added support for Thunderbird* on Windows
- Removed references to the standalone executable of the Windows script.
* Note that emails sent from Thunderbird don't include the From, To, Sent, or CC headers. Thunderbird (like Firefox) is not scriptable and those fields are not available. Only the body of the email or the selected text will be included in the task or note. Fortunately the email subject is available through some trickery and is used for the task or note name.