How to send AR Invoice in one email to multiple contacts instead of one email to each contact?

Summary: Currently Print Receivables Transaction job is sending mails to customer email ids separately.

Content (please ensure you mask any confidential information): We have a business requirement where a single invoicing mail should be sent to all the emails ids set for a particular customer account. Print Receivable Transaction is sending mails separately to each email ids.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):