Append to PDF
Append to existing PDF feature for the Adobe PDF Printer like PrimoPDF.
I print multiple sheets out of Excel to send for signatures but not all sheets and to append them together would be ideal. So, for now, I print the PDF in PrimoPDF because it has this feature, then send the PDF package via Adobe Sign.
Kevin Ellis commented
In addition to appending Excel files to PDFs, I'd recommend adding the feature "Append to existing PDF" in Microsoft Word as well. Adobe PDFMaker can do this in Outlook for email messages, but not in Word or Excel.