Mailmaster Compact – C4 to DL Envelope Inserter

The small footprint envelope inserting system offering flexibility and performance

The Mailmaster Compact is a cost effective 5,000 C4 to DL per hour, production envelope inserter, with a compact footprint which would fit into an office environment as well as a commercial production unit. 

Constructed to handle large volumes, but also designed for easy set-up and quick changeover from one job to another, making it equally suitable for short run work.

Three automatic feeders and a hand-feed position are provided as standard.
The prime document feeder has an integral folder.
Two insert stations handle a wide variety of documents.

You can see a machine video on our YouTube channel here.

Mailmaster Compact with a Fast Sheet Feeder/Collator/Folder


  • Up to 5,000 filled envelopes per hour
  • Packing thickness up to 12mm
  • Durable British construction
  • Quick changeover between jobs
  • Pivoting touch control screen also provides run information, error location and help pages
  • Easy changeover from one job to another
  • Top load feeders for ease of filling
  • Re-load without stopping the machine


  • Inserts into envelopes between DL and C4
  • Side insert stations feed a wide variety of material up to 7mm thick
  • Multiple feeding from each feeder to a pre-set quantity
  • Hand feed position
  • Additional modular feeders
  • OMR, BCR and 2D reading available.
  • Optional Variable thickness booklet feeder
  • Station linking, to increase loading capacity


  • Unique inserting system positively guides the inserts into the envelopes
  • Insert stations have miss, jam and double detectors
  • Further sensors throughout to stop the machine in case of error
  • Test mode for running a trial insertion
  • Choice of reading technology