MSOLSpray
Github repo: https://github.com/dafthack/MSOLSpray
Usage:
Import-Module .\MSOLSpray.ps1
Invoke-MSOLSpray -UserList .\USERLIST.TXT -Password test1234Last updated
Import-Module .\MSOLSpray.ps1
Invoke-MSOLSpray -UserList .\USERLIST.TXT -Password test1234Last updated