Abstract: A kiosk for dispensing and mailing prepaid delivery envelopes. In the preferred embodiment, the kiosk dispenses a prepaid envelope upon receipt of payment from the customer. The customer fills out the envelope and deposits it back into the kiosk for delivery. The kiosk is self-contained and the envelopes are secured in the kiosk prior to vending, and also after deposit by the user. The kiosk requires no weighing device as the envelopes are prepaid and may be packed to capacity without any additional weight charges. Also, the kiosk preferably contains no other facilities for calculating or otherwise determining a delivery charge.