On the reminder PDF all outstanding invoice numbers are mentioned with their remaining amount. But you do not know the details of these invoices (except from a description). When sending a reminder to your customer, the first question you get back is "can you send me the original invoices again please".

Therefore it would be useful if the PDF's of the underlying invoices are added to the reminder card. Maybe with a button on the reminder card of automatically (with a parameter on the request page) when creating an "issued reminder". Sometimes also credit memo's will be mentioned on the reminder, these may not be forgotten when developing the new functionality.

With BusinessCentral 2021 wave 1 the new e-mail functionalities are available to use. I think this is a huge positive step. Now there is also a "get source attachments" button on the e-mail edit screen. All attachments (manually) linked to the underlying document are attached to the e-mail. This same functionality can then be used to add the invoice PDF's to the reminder e-mail send.

The same functionality can maybe later added to the customer statements functionality.