I am doing a checkout page and implemented authorize.net's c# sample code:

https://github.com/AuthorizeNet/sample-code-csharp/blob/master/PaymentTransactions/ChargeCreditCard....

The client also wants to have authorize.net send a confirmation email. I am having a hard time finding how to do that in the documentation. How do you do this on the code end?   Is there sample code that implements this?  

Please advise. Thx