accept
address
agree
approve
cancel
check
checkmark
complete
confirm
contact
contract
correct
correspondence
cross
delete
delivery
document
done
email
envelope
error
false
feedback
icon
letter
mail
mailbox
message
newsletter
newspaper
no
ok
open
postcard
receive
reject
remove
right
send
sms
spam
success
validate
verify
vote
wrong
x
yes