Yes it is so dont do it!
Yes, but it is illegal and an invasion of their privacy.
not unless you get caught
Yes, as long as it isn't stolen mail. No, it is illegal, even to place a flyer on the flag. The mailbox is US Government property.
That is kind of a stupid question considering the fact that it is illegal to change the position of the thing on the side, that it is illegal to block your mailbox from opening, and that it is illegal to fill your mailbox with a substance that is irremovable
Yes, it is illegal to hit a mailbox with a vehicle as it is considered vandalism and destruction of property.
no it is illegal t open someone else's mailbox
It's illegal.
Yes it is illegal because it it vandalism.
Yes, it is illegal for someone to open your mailbox without your permission. This is considered tampering with the mail, which is a federal offense punishable by law.
Yes
Yes
It is TRESPASSING.