We are using an action with class CL_DOC_PROCESSING_ORDER, method CRM_SRVORDER_EXEC_SMART_FORM to send an email with a PDF attachment of our service estimates.
We would like to add some text to the body of the email - i.e. "Please find attached the estimate for your service job"
How can this be done? Can I use the above method or do I have to do something else programatically.