Related Clues:

• P.O. item
• L, e.g.: Abbr.
• Ltr. carrier
• Snail mail enc.
• Ltr. holder
• Envelope encl.
• It may accompany a MS.
• Mail convenience: Abbr.
• MS. enclosure
• Letter container: Abbr.
• Env. enclosure
• Mailer, briefly
• Terminate
• Stamp's place: Abbr.
• Postal delivery: Abbr.