[Script Of Sep. 30] Change email addresses using format firstname.lastname@domain.com in EXO
Sep.
30
Script Download:
The script is available for download from https://gallery.technet.microsoft.com/Change-email-addresses-359d5d0e. You can also use Microsoft Script Browser for Windows PowerShell ISE to download the sample with one button click from within your scripting environment.
This script will set UPN using format firstname.lastname@domain.com in Office 365
You can find more All-In-One Script Framework script samples at https://aka.ms/onescriptingallery