Feeding envelopes on the SendPro CX 100, SendPro CX 200, SendPro CX 300

Applies to SendPro CX Series (8V models)

Products affected: SendPro® CX 100, SendPro® CX 200, SendPro® CX 300

  1. Shingle the envelopes (slant the stack as shown) so the bottom envelope feeds first. All envelopes in a single stack should be the same size.
  2. Place the stack of mail on the feed deck. Place the envelopes with the flap side facing down and the top edge against the rear wall.

    Envelope stack in SendPro Auto feeder

  3. Slide the side guide up to the mail stack. Leave about 1/8" space (about the thickness of 2 quarters) between the stack and the side guide to ensure the stack feeds without resistance.
    Important: Hold the envelope against the back wall to avoid skews. If you do not hold the envelope against the back wall, it can feed in crooked or skewed. A skewed envelope can either exit the device with no postage applied or cause a jam. 

    Envelope stack, side guide on SendPro Auto
    Envelope stack, side guide on SendPro Auto - top view

  4. Slide the stack into the feeder until you feel resistance. Note the position of the side guide to show how far into the feeder you need to position the stack.

    Feeding envelope stack on SendPro C Auto

  5. Tap Start on the Envelope Printing screen. The system automatically feeds the envelopes and prints the postage.

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UPDATED: October 06, 2026