Get-ADUser:
Get-ADUser -Filter {UserPrincipalName -like "*@domain.com"}Remove-ADUser
Get-ADUser -Filter {UserPrincipalName -like "*@domain.com"} | Remove-ADUser -confirm:$false
Get-ADUser:
Get-ADUser -Filter {UserPrincipalName -like "*@domain.com"}Get-ADUser -Filter {UserPrincipalName -like "*@domain.com"} | Remove-ADUser -confirm:$false