Customer Statements In Batch

Hi All

I am trying to set up a batch of customers within AX to receive customer statements.

Some of the customers, I have set up so the print management destination for the customer statement as an email. I have set up the email address and subject.

Other customers will follow the normal route set up in the batch job as a PDF saved to a file destination.

How can I set the batch job up for it to send the statement to a customer via email if set up, or if not default to a PDF in the file destination?

Thank you

Simon