I runs a consultancy firm and manages over 100 clients, each of whom requires 30-40 invoices to be issued. Many of these invoices are partially paid, which has led to concerns about the effectiveness of sending individual payment reminders. My client feels that it would be much more efficient to send a single email summarizing all outstanding invoices for each specific client. This way, clients would receive a clear and concise overview of what is still owed, rather than being overwhelmed by multiple reminders. The goal is to streamline the process and make it easier for clients to track their payments without confusion.