This is not configurable yet in the latest UCCS-Analytics version however you can use this
To configure the subscription sender email address and display name:
1 Stop the UCCS - Analytics services.
2 Locate the configuration file (Dell.UC.Insights.DataEngine.Service.exe.config) in the
3 Use a text editor to open the file.
4 Locate the section titled <appSettings>
5 Add the following two lines in the <appSettings> section:
<add key="subscriptionSender" value=”specifySenderEmailAddress" />
<add key="subscriptionSenderDisplayName" value="specifySenderDisplayName" />
6 Enter the sender email address and display name that you want by changing the text
enclosed in quotation marks (") that follows value= in the two lines.
7 Save and exit the file.
8 Start the UCCS - Analytics services.