To change the way Exchange displays your sender name, simply change your preferred/chosen name in SPIRE.
Log in to SPIRE.
Go to SPIRE Main Menu > My Personal Information > Names and click Edit next to the Pref./Chosen name.
Next, enter your new preferred/chosen first name and click Save.
For Subsidiary IT Accounts, in the SPIRE Main Menu, go to IT Accounts > My IT Accounts and click the Subsidiary IT Account whose name you want to change. In the Alternative Names field, enter your alternate display name and click Save Name.
Note: Other name changes have to be completed by changing your Human Resources Name through Human Resources.