IMAP Draft Unread 1.1.2 Requires Restart
by Mic
This is a Thunderbird addon that lets you customize the behavior of the IMAP draft unread messages. No more new mail notifications for your drafts!!
About this Add-on
You can choose to set them always read or to leave them unread but let Thunderbird to not consider them for new mail notifications.
Development suspended, more info: https://micz.it/projects/thunderbird-add-ons/development-suspended/