This article outlines the steps for verifying that an invoice was emailed to one of your customers and for enabling read receipt when you email an invoice.
Before you begin, ensure you have the correct email address for your customer:
To view the history for multiple invoices, enable the necessary preferences.
If you are sending emails through the QuickBooks email:
If you are using Outlook or Web mail:
Some email programs have an option for read receipts. If you use Microsoft Outlook, Outlook Express, or another email program supported by QuickBooks Desktop, you can enable your email program's read receipt option.
If you use webmail or another email program, check to see if it supports read receipts and enable that option.