Outlook's tasks feature is pretty simple and basic. If you want to power up Outlook tasks with organisation and room for details, integrate the awesome note-taking tool OneNote with Outlook.
MakeUseOf points out that you can enable the OneNote add-in in Outlook (under File > Options > Add-Ins), which will bring OneNote icons into Outlook. Then, when you get emails that should be assigned as tasks, you can create the task in Outlook, highlight it, and easily send it to OneNote.
In OneNote, create a Task Management folder for this purpose and a new section for each project. The tasks you send from Outlook will be pages in your project section.
The beauty of this is you can save everything related to the task on your OneNote task page, including inserting tables, screen clippings, files and/or links.
Check out the article below for more details on setting this up.