> Envelopes are no different than post cards. Anyone can legally read them. Anyone with access to them. You can absolutely not read my postcards, for example,

> Envelopes are no different than post cards. Anyone can legally read them. Anyone with access to them. You can absolutely not read my postcards, for example, because you don't have a key for my mailbox. > As a reminder, there is no legal expectation of privacy for the outside of your mail. Just because it's legal doesn't make it a great thing to happen.