Specifying the number of envelopes to print allows you to count down and stop the machine after a certain number of pieces have been processed. For example, you might want to remove a certain number from the stacker and place in a separate tray or bag.
To change the number of envelopes or tapes to print, toggle between the Envelope quantity or Tape quantity tab on the Run Mail screen.
Select the Start button for envelopes, or Tape button for tapes. The system will stop once it has processed the number of envelopes/tapes you specified.