Email Triggering on FD32 when Customer Credit limit exceeds

Dear All,

We have a requirement to trigger an e-mail, whenever the credit limit of a customer is exceeded, the credit limit are in FD32.

A mail should go to the customer, with attachment as a specific pdf format.

So does writing an email functionality in a report and submitting it in background is recommended or there is a way through which email can be triggered.

Thanks,

A Sustainer