When weighing objects on a postal scale, should I weigh it with or without the envelope/box ?

With the box or envelope. That is the correct weight.When weighing objects on a postal scale, should I weigh it with or without the envelope/box ?
with the envelope or box... whatever you are mailing put it up there.When weighing objects on a postal scale, should I weigh it with or without the envelope/box ?
Both package insert and package together.