Packages come in many shapes and sizes in Cat Mail Co., and you have to store them properly to ensure that they reach the correct recipients. When you are just getting started, you won’t have to think much about package storage. However, packages will come in advanced variants that will need proper storage. If you fail to do so, you will destroy them completely.
In this guide, I will explain how to detect every type of package constraint and what’s the correct way to place them properly.
All Package Constraints in Cat Mail Co.
The table below has all the information you will need when it comes to package constraints. To detect the type of package, you can often use the clues left by the recipient. Usually, the recipient will say certain words in their package description that accurately reflect what type of constraint might be applicable.
| Label | Recipient Description | How to Store |
|---|---|---|
| Weight | “You look strong enough; it’s really not lightweight.” “I hope you have someone to help you because it’s heavy.” |
These are heavy boxes that can crush anything under them. You will have to apply six weight stickers and a special heavy sticker. Make sure to keep them at the bottom because they will crush anything that is kept under them. |
| Fragile | “Be cautious, it’s a fragile box.” | These are extremely fragile boxes that will get damaged if you keep anything on top. Always store these packages on top of a shelf. |
| Cold | “I am waiting for my delivery from [Any Island], I hope you kept it cold enough.” “I ordered special catnip seeds, they need to be refrigerated so they don’t sprout.” “My package is a box of ice creams.” “My package is supposed to be refrigerated.” “My package is a special fish delivery.” |
These packages must be kept in the cooler room; otherwise they will get damaged at the end of your shift. |
| Warm | “My package is supposed to stay warm for a better preservation.” “My package is a bunch of special fire dragon scales.” “My package is from [Any Island], I hope the trip didn’t let it cool down.” |
These packages must be kept in the heated room; otherwise they will take damage at the end of your shift. |
| Dark | “My package contains photographic films, they have to stay in a dark room.” “My package is very special, it needs to stay in a dark environment.” “I ordered midnight spores, they need to stay away from the light.” “Have you stored my dark package properly?” |
You must place these packages in the dark room; otherwise they will get damaged at the end of their shift. To unlock the room, you will have to clear the parcel pile in the cooler room. |
| Light | “My package is very special, it needs to stay in a bright environment.” “My package is supposed to stay in a bright room.” “I ordered sunflowers, they need a lot of light.” |
These parcels must be stored in the Light Room. Otherwise, they will get damaged. To unlock the room, you will need to clear the parcel pile in the Heating Room. |
| Partner/Love/Heart | You have to detect the package by putting it under the lamp. You will find a glowing heart on it. Typically, these packages will have a second parcel that will connect with it using two light beams. | Both packages will have to be kept together. If they get separated, the light beams will disappear. |
How to repair a damaged package in Cat Mail Co.
A package might get damaged if you have stored it improperly. Occasionally, you might miss a sticker, which will result in it getting returned. You might also accidentally drop it in the water or place it in the wrong room. Thankfully, there is a pretty easy and convenient way to repair the parcel so that they can reach the recipient.
To repair a package, place it on the repair table after you have unlocked it. Click the cardboard to the left of the table, and that will automatically restore your package. Any damage previously taken by your parcels will be reverted. However, you can restore at most three parcels per shift.







