Related Clues:

• Mailed package
• Six-day-a-week delivery, slangily
• Stamped delivery
• Delivery by USPS
• What the postman delivers
• Letters from the post office
• Letters with stamps
• Package to mail
• It's delivered to your house
• It's delivered during the week
• Stamped letters
• Delivered letters
• It may be fed through a slot
• Package delivery
• Postal letters, deprecatingly