To setup the report you need to go to Settings>Settings>General settings
From this page you can set the number of days after which the email is sent, or you can set 0 for never see below screen shot
In the example above tasks not completed after 5 days has passed will appear in and email report which looks like below.
Note: In Settings>Settings>email settings you can choose HTML or PDF and configure the sending emails and name, title, fonts and additional content.
