In the sales register screen, could there be a column showing if an invoice has been emailed? We print and hand customer a hard copy upon delivery, then follow up later with an email copy. It is ...
Hi AndPatt​
If you change your default sales invoice setting to "To be printed and emailed", then after it's been printed, it changes to "To be emailed" automatically. Then, at the end of each day, or every hour, or whenever, you can go to the Sales >> Print/Email Invoices area, choose the "To be emailed" tab, and only the invoices that haven't yet been emailed will appear.
** NOTE: This is for the desktop version, I don't know if it's the same in the browser version which I avoid as much as possible.