FOSS gamedev and creative worlds

I am trying Mailbox ver 4 and it seems to not work very well. Anyone have any that work like a mailbox or post office?

try chests_0gb_us. it's got a dropbox that acts like a mailbox, so that you can put stuff in it but can't take it out if you don't own the chest

There's also the inbox mod somewhere. It adds a decorative box for letters/newspapers (american style) and allows players to give items to other players via that mailbox. There's also a mod that adds an "/inbox" chat command and allows to send mail messages to players.

The /Inbox chat command is from chatplus

The inbox mod is by Aqua, I think.