address
bag
black
box
carrier
communication
container
correspondence
courier
deliver
delivery
deliveryman
design
envelope
global
icon
industry
internet
isolated
letter
letterbox
mail
mailbox
message
office
package
paper
parcel
pictogram
pigeon
post
postage
postal
postbox
postman
postmark
send
sent
service
shipping
stamp
symbol
tracking
transport
truck
van
worker