Related Clues:

• Freelancer's enc.
• Request from an ed.
• Letter carrier?: Abbr.
• Post delivery: Abbr.
• Printer tray abbr.
• Env. contents
• Polite encl.
• Elysium
• Part of SASE
• Part of SASE (Abbr.)
• USPS delivery
• Freelancer's encl.
• It may have a window: Abbr.
• Postpaid enc.
• It may get stuffed: Abbr.