Customer would like to have the ability to send a notification reminder for a invoice document that is created from PandaDoc.

As per customer :
I should say that we do not use any of suggested payment gateway.
We just use an international swift payments thought the bank account.
So invoice is not linked to stripe, paypal etc.
It’s just a document which we provide for the client to pay our services.
Is there any chance to have this useful service with the reminders for that kind of documents in a same way that we have it for the contracts?