Working at the post office in Cat Mail Co. is a charming experience, but if you want more than just the satisfaction of helping humanoid cats, you will want to hunt down every achievement. Most of these are straightforward, though some require specific room unlocks or item interactions.
Cat Mail Co. Achievement List
Here is how you can earn every achievement available in the game:
| Achievement | Requirement |
|---|---|
| Heave Ho | Use the scanner to identify a heavy parcel and attach the weight sticker. |
| Iced Whiskers | Unlock the refrigerator room key by the counter and open the side hallway fridge room. |
| Be Careful | Scan a parcel, identify the glass icon, and apply the fragile glass sticker. |
| Cats Don't Belong In Water | Jump into the water located at the back of the post office. |
| Keep It Cold | Scan a parcel for the snowflake icon and apply the ice temperature sticker. |
| From Cats Island With Love | Apply one decorative stamp to any parcel via the sticker menu. |
| Until Shipment Do Us Part | Scan a 'lovers' package (marked with a heart) and stamp it with a heart. |
| Night Vision Activated | Play until you gain access to the dark room, then enter it. |
| Float Mail Co. | Load 30 or more parcels onto the boat when it arrives (using smaller parcels makes this easier). |
| Stamps Hobbyist | Place 10 stamps on a single parcel. |
| As Good As New | Repair a damaged (dark/rough-looking) parcel at the bench in the repair room. |
| Take Off Your Furr | Progress through the game until you unlock the heated room. |
| Hot, Hot, Hot! | Scan a parcel needing heat and apply the hot sticker. |
| Heavy Duty | Apply a total of 500 regular or decorative stamps across all parcels. |
| Sunbath Siesta | Unlock the light room by playing through the game, then enter it. |
| A Well Deserved Retirement | Complete the story and liberate the old postman. |
| All cleaned up | Empty the entire pile of packages in the main room. |
Tips for Completion
For achievements like Heavy Duty, you simply need to keep applying stamps to every parcel you process. Don't worry about wasting them; as long as you hit the 500-stamp threshold, the achievement will unlock.
For All cleaned up, note that not every package in the main room's pile is available immediately. You will need to progress through your shifts to make them all accessible, so this achievement will naturally come toward the end of your playthrough as you finish the story and earn A Well Deserved Retirement.

