LaunchJul 9
Cat Mail Co. released on Steam with 4-player co-op and a free launch-week Supporter Pack.
Cat Mail Co. Wiki
Cat Mail Co.
Cat Mail Co. on Steam — run a cozy cat post office, sort parcels from the daily boat, and reveal hidden package truths under moonlight.
Last updated: July 2026
Play Cat Mail Co.
Steam · Windows PC
📬 Gameplay intro
What is Cat Mail Co.?
Watch the core Cat Mail Co. loop on Steam — weigh parcels, sort mail, and load the daily boat.
Cat Mail Co. is a cozy postal management sim on Steam from Maracas Studio. Run a cozy cat post office. Sort and deliver parcels from the daily boat, organizing everything your way. At night, the moon reveals hidden truths about packages. Clear a strange backlog, help locals, and unlock new abilities and destinations.
The Cat Mail Co. loop has no timers: weigh parcels, apply labels and stamps, organize storage your way, serve island cats, and load the boat before night falls.
This Cat Mail Co. Wiki tracks verified Cat Mail Co. guides, parcel handling tips, co-op workflow, and Steam achievement notes.
| Developer | Maracas Studio |
|---|---|
| Platform | Steam (Windows) |
| Genre | Cozy · Simulation · Management |
| Release | July 9, 2026 |
| Steam App | https://store.steampowered.com/app/4380490/Cat_Mail_Co/ |
| Last verified | July 11, 2026 |
Cat Mail Co. at a glance
PlatformSteam
Co-opUp to 4 players
Achievements17 on Steam
VerifiedJuly 11, 2026
Weigh · sort · ship · moonlight
Cat Mail Co. rewards calm preparation — every label and shelf zone makes the next boat day easier.
01
Weigh
Check postage on the Cat Mail Co. scale before labeling.
Learn more →02Sort
Stamp, tag fragile/heavy, and shelve by destination in Cat Mail Co..
Learn more →03Ship
Load outgoing Cat Mail Co. parcels onto the correct captain route.
Learn more →04Moonlight
At night, Cat Mail Co. moonlight reveals magic package properties.
Learn more →Your Cat Mail Co. journey
Four steps from your first Cat Mail Co. shift to a smooth post office workflow.
Learn basicsStart the Cat Mail Co. beginner guide — receive boat mail, weigh parcels, and serve your first customers.Open guide →
Handle packagesMaster Cat Mail Co. weighing, stamps, fragile/heavy labels, and the X-ray scanner.Open guide →
Organize officeSet up Cat Mail Co. shelves by destination and optimize paths before the next boat wave.Open guide →
Unlock routesClear backlog in Cat Mail Co. to unlock new destinations, tools, and night-time magic parcels.Open guide →
Trending now
High-traffic Cat Mail Co. wiki pages after the July 2026 Steam launch.
Beginner guide
StartHow to play Cat Mail Co. — first day on Cat Island.
Package handling
MechanicsCat Mail Co. weigh, stamp, label, and fragile rules.
Night mechanics
MoonlightCat Mail Co. magic packages and hidden properties.
Co-op guide
Multiplayer4-player Cat Mail Co. roles and workflow splits.
Boat routes
ShippingCat Mail Co. incoming mail and outgoing loading.
Achievements
Steam17 Cat Mail Co. Steam achievements.
Quick tips
Cat Mail Co. quick tips verified July 11, 2026.
| Tip | Detail | Status |
|---|---|---|
Tip 1 | Weigh every Cat Mail Co. parcel on the scale before applying destination labels — postage depends on weight. | active |
Tip 2 | Mark fragile and heavy packages correctly; fragile parcels cannot be stacked under other boxes. | active |
Tip 3 | Use the X-ray scanner in Cat Mail Co. to check whether a parcel needs fragile or heavy labels. | active |
Tip 4 | Organize shelves by destination early so boat loading stays fast as new routes unlock. | active |
Last checked: July 11, 2026
Core systems
Major Cat Mail Co. systems from the Steam store page.
| System | What it does | Guide |
|---|---|---|
| Package handling | Weigh, stamp, label, sort | Package handling |
| Day/night cycle | Moonlight reveals hidden truths | Night mechanics |
| Boat routes | Incoming mail and outgoing cargo | Boat routes |
| Co-op | Up to 4 players online | Co-op guide |
| Progression | Unlock tools, abilities, destinations | Destinations |
Wiki sections
Cat Mail Co. wiki database hubs on this site.
Launch notes
Cat Mail Co. July 2026 Steam release highlights.
DemoSteam
Free Cat Mail Co. demo with save transfer to the full game.
Common questions
- How do you play Cat Mail Co.?
- Receive boat mail, weigh and label parcels, sort them into storage, serve customers at the bell, and load outgoing cargo before departure. See the Cat Mail Co. beginner guide for a full first-day walkthrough.
- Is Cat Mail Co. on Switch, PS5, or Xbox?
- Cat Mail Co. is Steam-only for Windows PC at launch. Google may suggest console platforms, but the official store page lists only Steam.
- Does Cat Mail Co. have codes?
- Cat Mail Co. is a paid Steam sim without Roblox-style redeem codes. Ignore unrelated "codes" search results — they refer to other games.
- How does Cat Mail Co. co-op work?
- Up to four players can run the post office together online. Split weighing, sorting, customer service, and boat loading. Read the Cat Mail Co. co-op guide for role suggestions.
- What happens at night in Cat Mail Co.?
- Moonlight reveals hidden package properties. Magic parcels may need special handling before you ship them.
- Games like Cat Mail Co.?
- Players compare Cat Mail Co. to cozy organization sims with physics-based sorting. It is a full management sim, not a short mini-game.