Thank you for your feedback! If we read it correctly, you’re asking for the ability to issue reminders to your customers that they still owe an outstanding amount. Is that correctly understood?Serge commented
After you received the payment, you want to send a receipt. That’s the Invoice with the payments and the new balance. This is really important!
In the Competitor products like QuickBooks and Freshbooks customer can get a link and see the updated invoices whenever thay wane.