Two widgets are implemented in the "E-Mail" module.
When installed on the "Home" tab, this widget allows you to monitor the last mails arrived in the "E-Mail" module. You will also be able to enter any of them by pressing on the message in the e-mail list shown in the widget window. At the same time, you will be moved to the "E-Mail" module in the mode of viewing the e-mail.
The "Assigned Messages" widget acts in the same manner as the one described above. However, in this case, the widget window will contain the list of the latest assigned mails.
The instructions of how to use widgets are given in the "Home -> Widgets" section.