Postal service mail sorters, processors, and processing machine operators are also called:

• Automation Clerk
• Computer Forwarding System Markup Clerk (CFS Markup Clerk)
• Distribution Clerk
• Flat Sorting Machine Clerk (FSM Clerk)
• Mail Handler
• Mail Handler Equipment Operator
• Mail Processing Clerk
• Mail Processor
• Parcel Post Distribution Machine Operator (PDPMO)
• Small Package and Bundle Sorter Clerk (SPBS Clerk)