Templates can be configured to have other template documents, or static uploaded documents, attached when they are generated into an email. An example use case for this feature is attaching a PDF invoice generated from a template to an email sent to a customer. This scenario can be implemented entirely as configuration with the content template solution installed

Email attachments are added to a grid on the email options tab of the content template form. The screenshot below shows an example for a template being attached as a PDF to another templates email