The delivery note is an item used to start A Clockwork Syringe. The note is given to players by Postie Pete after talking to him outside their player-owned house portal. The estate agent will take it from you after the battle with the Barrelchest Mk II.
~R.P.D.T. Delivery Note~
A large parcel consisting of:
1x large and totally inconspicuous crate assured not to contain anything dangerous at all
Has been delivered to your player-owned house.Note: Contents of package unchecked by R.P.D.T. and sender's assurances are not backed by R.P.D.T.