Mailroom machine
Else clues• Certain postal worker
• Classifier
• Classifying machine
• Copier adjunct
• Copier attachment
• Mail worker
• Mailroom employee
• Mailroom worker
• One concerned with classes
• Photocopier attachment
• Photocopier part
• Pigeonhole user
• Post office employee
• Post office machine
• Postal employee
• Postal gizmo
• Postal machine
• Postal post
• Postal worker
• Separator of a kind