Envelopes not feeding on the SendPro MailCenter, SendPro P Series, Connect+ Series

Shingle the envelopes, fan them, adjust the side guide and thickness adjustment knob and clean the envelope path if envelopes are not feeding.

Products affected: SendPro® MailCenter, SendPro® P Series, Connect+® Series

Issue

Envelopes do not feed through the meter.

Cause

This issue can be caused by a number of factors:

  • The envelope dimensions are outside of the acceptable range.
  • The envelopes are not stacked properly on the feed deck.
  • The thickness adjustment knob setting is incorrect.
  • The stack of envelopes is leaning away from the feeder.
  • Too many envelopes are on the feed deck.
  • The envelopes are too heavy or too thick.
  • Belts or rollers are worn, damaged or missing.

Resolution

  1. Ensure that the envelopes meet the specifications.
  2. Sort the mail by envelope size. All envelopes in a single stack should be the same size.
  3. Shingle the envelopes so the bottom envelope feeds first. Note: This unnecessary if your meter is using WOW mode.
    Envelopes slanted to allow for correct feeding
  4. If your mailpieces are sealed, fan them to make sure they do not stick together as a result of previous processing.
    Fan the envelopes
  5. Place the stack of mail on the feed deck. Place the envelopes with the flaps down and against the rear wall.
  6. Make sure that the envelopes are pushed far enough so that they cover the feed sensor located on the feed deck near the rear wall.
    Envelopes slanted so the bottom envelope feeds first
  7. Adjust the side guide so that it is close to, but not touching, the bottom edge of the envelope stack. Be sure to leave a slight clearance between the side guide and envelopes (about 1.6 mm clearance).
  8. Use the thickness adjustment knob to adjust for envelope thickness.
    • If envelopes do not get past the thickness adjustment knob, set it to a higher setting.
    • If too many envelopes get fed, set the thickness adjustment knob to a lower setting.
    Thickness adjustment knob
    spmc-thickness-adjustment
  9. If the feed motor does not start, clean the feed sensor at the back wall near the entrance of the meter. Using a can of non-flammable canned air, blow onto the feed deck that the envelopes travel on. Work from left to right of the meter. Make sure to spend enough time on this step to remove all the dust and debris.
    Feed sensor

UPDATED: November 12, 2026