The Mailroom controls and keyboard shortcuts are shown on screen as you play, so the binding for whatever you are looking at is always in front of you. The game is mouse and keyboard with full controller support, and the key you will press most is E, which opens, reads, inspects and closes things.
The Mailroom controls and keyboard shortcuts
- E opens, reads, inspects or closes things, and it is also the key that ends an inspection. While you hold an object you get E Stop inspecting next to a Look prompt.
- Left mouse button grabs objects, such as the butt paper, and also throws and drops whatever you are holding.
- X cancels the radial action that appears over the mortar, where it reads Grind.
- Arrow keys page through the directory book, and E closes it again.
Because the prompts carry the bindings themselves, you can pick up a new interaction without leaving the desk. Inspecting an envelope is the one that matters most often, and what it shows you is in mail sorting rules. The game also supports full controller play, including DualShock controllers.
The accessibility tab
The settings menu carries an accessibility section, and the option worth turning on first lives there: a readability setting that makes everything easier to read. It is the one to reach for if the small print on the envelopes feels cramped.
The same menu has mouse sensitivity and mouse inversion, and mouse inversion was added to the full game and then back-ported into the demo, so the toggle is there if your vertical axis feels reversed. Audio is adjustable with custom volume controls, and the game supports stereo sound.
Readability matters most for the directory book, where every recipient has to be checked by name and department before a letter goes up a tube: that lookup is in which floor to send mail to.
First run and handheld play
A streamer-focused first-run flow lets you set the sound volume immediately instead of hunting through the settings screen, and it was added along with a mouse sensitivity option in a demo update. If you are playing on Steam Deck the game plays and sorts mail fine, with one caveat: some of the words on the letters come out smaller on the handheld's screen, so the readability setting is worth turning on there as well.