Site Managers have the option to edit automated emails related to account registration, invitation, and blocking of user accounts. These emails can be reached via the Site Manager Dashboard.
On the Account Setting Page, system email templates can be found at the bottom of the page.
Be careful when changing them: make sure you don't delete/overwrite text that is put between [ ]. On these spots, the system will generate automatic content for each user (e.g. their name). Deleting or changing the brackets will prevent the system to do so.