What about these links ? - https://www.ghacks.net/2019/10/26/manage-your-todo-txt-with-thunderbird-using-this-extension/- https://www.ghacks.net/2015/04/30/how-lightnings-integration-in-thunderbird-looks-like/
Joined just to add my vote.It's years I'm looking for a sub task manager with subtasks. Found on nextcloud and tasks.org me too.I don't know if there are apis to manage sub activities, and if it possible to create a timeline viewer for tasks and subt...
