Yeah, just ask the customer to select manual input from the scanning screen and send an email to your work's address, you should receive it if the machine has been configured correctly.
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Up to my nuts in toner and loving it!
Yep or Remotely add yourself to the Address book. Even easier for the customer. If you have it set as Admin is always sending email address this is even easier for them.
If not then they'll have to select a sender. Assuming the Check box for Sender is checked on users in the Address Book.