Related Clues:

• Separate into piles
• Organize alphabetically, say
• Common computer instruction
• Straighten up
• Do a laundry task
• Declutter
• Do mail work
• Do mail-room work
• Put into groups
• Arrange alphabetically, e.g.
• Do a postal chore
• Category .
• Arrange by kind
• Tidy (up)
• Put mail in boxes, say