Account Creation Email Question

We are looking at automating account creation and sending mails to the manager once the account has been created. The Notification template I built works well unless there are multiple user accounts created with the same manager. Is there something I can do to prevent this?

Template:

Hi %ManagerName%,

A network account has been automatically created for your new associate %givenName% %sn%, employee # %employeeID%. Their account name is: %Username% and their initial logon password is: %Password%.

Results (with 2 accounts for same manager)

Hi White, Chad,

A network account has been automatically created for your new associate Teston,Brenda Testerly,Testerly, employee # 8888888,8888887. Their account name is: ttesterly,btesterly and their initial logon password is: Puzzle#6706,Magpie#2202.

I would appreciate any input on how to best achieve this. Thank you.