This new feature allows QuickBooks for Mac 2016 users to print directly to envelopes, saving them time and hassle of first printing to a label and then affixing the label to an envelope. While it is true that you can print QuickBooks forms from Mac that will fit in a window envelope, or print labels from QuickBooks for Mac, you now have the added flexibility of printing directly to envelopes for a more professional appearance.
You can print direct to envelopes from selected items. To access this new feature go to File, Print Forms, Multiple Form Types....Print Envelopes. You can access this print option from Invoices, Checks, Purchase Orders and Statements.