Creating tasks builds a to-do list in Outlook to help you stay organized.
Select Tasks in the navigation pane and choose New Task.
Add a subject, date, and priority.
Select the Reminder checkbox if you'd like to set a reminder.
Select Save & Close.
From anywhere in Outlook, hover over the Tasks icon to see your to-do list. Select any task to open it.
Tip: If an email needs to be a Task, select and drag it to the Tasks icon.