Go here as exile. https://i.imgur.com/UzUTGXf.jpg
Buy this decor item "Exile Mailbox" https://i.imgur.com/Om9IY9O.jpg
Working mail! https://i.imgur.com/rh3mSUw.jpg
Same for dominion rep vendor.
You can also place Vendoring machine and Storage Unit FABkits to get vendor and bank.