Feeding envelopes on the SendPro C Auto and SendPro CX 500
Use the feeder to automatically print a stack of mail.
Products affected: SendPro® C Auto (9H00), SendPro® CX 500
Your SendPro C Auto can automatically feed a stack of envelopes.
Before you begin
- All envelopes in a single stack must be the same width and thickness.
- All envelopes in a single stack must be sealed or unsealed. Mixing sealed and unsealed envelopes in a stack will cause a jam in the moistener.
Insert the envelopes into the feeder
- Slant the stack of envelopes as shown so the bottom envelope feeds first.
- 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.
- 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 so the envelopes do not drag against the guide.
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. The message "Clear Paper Jam" appears. This could deduct funds. Even a minor skew that may be difficult to see can cause a jam. - Push the stack into the feeder until you feel resistance. The image shows how far into the feeder you need to position the stack. The side guide is pulled away to show the edge of the envelopes.
- Set the desired moistener setting for your envelopes. In this photo, "no seal" is selected.
- Tap Start on the Print on Envelopes app. The system automatically feeds the envelopes and prints the postage.
- If you are using a stacker, extend the stacker tray so that the envelopes exit the feeder completely.
- If you are moistening the envelope flaps, press down on the envelopes after printing to ensure the flaps are securely glued closed.
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UPDATED: October 06, 2026