Hi Martin ,
I think I may have composed the main question in an unclear manner. I will explain the situation here :
after invoicing a sales order , an email containing the generated invoice as an attachment is sent out to different emails which are defined in print management system settings. This email contains only the email header and the attached invoice. We need to add a body to the same email. So the final product should be : Email containing header + body + pdf of the generated invoice. And I wanted to do the same using print management because the setup of sending out emails is already done in the environment.
If I use addAttachment() I have to provide the a specific file link there and it will not help as different pdf's are generated everytime and i cannot specify a path.
I hope I have made the situation clear :)