address
adult
box
card
caucasian
closeup
communication
container
correspondence
day
delivering
delivery
document
email
envelope
hand
happiness
happy
holding
indoors
inside
letter
letterbox
mail
mailbox
mailman
message
metal
one
open
opening
package
people
person
placing
post
postage
postal
postbox
postcard
postman
putting
recipient
residential
send
silver
smiling
steel
young