Hello Kitty Island Adventure takes you to a large archipelago that you can explore. At the beginning of the game, you have to travel the old fashioned way; run (and swim) around to reach your destination. Thankfully, you'll eventually be able to unlock a fast travel system.

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In this guide, we'll take a look at how to unlock this fast system, and where each point is located. Instead of traveling wherever you want, you'll be able to unlock and travel to mailboxes that appear on the map. First, let's dive into the quest you need to complete to unlock these mailboxes.
How to unlock mailboxes
To unlock mailboxes, you must do so complete the assignment Delivery service. This mission will be unlocked when you befriend Kuromi at level one. When this happens, Kuromi will be waiting for you by a mailbox in Spooky Swamp.
At this point you have to deliver a pumpkin to My Melody, and then bring back a plant for Kuromi. On the way back, Cinnamoroll will explain the mailboxes to you, which you can take back to Spooky Swamp to deliver the plant.
Once this is done, fast travel will be unlocked! If you really want to use the mailboxes, you need to discover them first. This means you won't be able to teleport to an area you've never been before.
All mailbox locations
Below you can check out all the mailboxes you can teleport to in Hello Kitty Island Adventure. Not all of these locations are available to visit from the start of the game. Keep unlocking them complete quests and raise friendship with everyone. We've noted if all mailboxes can be found by just exploring, or if quests/tasks have to be completed beforehand.
From the map you will be able to see one complete list of all mailboxes. Any mailbox in an area that you have explored but not yet seen will do so appear as some question marks. This will help you keep track of any mailboxes you may have missed.
Seaside resort
- Instantly Unlockable (No Quests Required): Yes
Mailbox number |
Name on the map |
Place |
---|---|---|
1 |
Moon Island |
This island is shaped like a crescent on the left side of the sea The mailbox is on the right “point” of the moon |
2 |
Hopscotch Islands |
This is just below Moon Island, on the left side of the island with raised terrain |
3 |
Resort Docks |
This is right on the harbor! |
4 |
Cozy islands |
This mailbox is located north of the Resort Plaza, on the upper right island |
5 |
Resort Plaza |
This is just to the right of the Resort Plaza |
6 |
Resort Gate |
This is just south of the gate leading to the Spooky Swamp |
Ghostly Swamp
- Instantly Unlockable (No Quests Required): Yes
Mailbox number |
Name on the map |
Place |
---|---|---|
1 |
Ghost Tour Ride |
This is in the upper left corner of the area, at the start of the Ghost Tour Ride |
2 |
Ghostly Swamp |
This is in the central square of the area |
3 |
Nature reserve |
This is in the southeast corner of the swamp, near the Nature Preserve building |
Rainbox Reef
- Instantly Unlockable (No Quests Required): No
Mailbox number |
Name on the map |
Place |
---|---|---|
1 |
Sunken ship |
This is near the stern section of the ship, which is along the northern edge of the reef |
2 |
Kelp Maze |
This is just south of the dock leading down from Gemstone Mountain |
3 |
Comedy Club |
This is right outside the club where Hangyodon is located |
There is a fourth mailbox that is unlocked when you complete the quest Straight to Your Heart. This is part of a longer series that will take a while to reach.
Mount Hothead
- Instantly Unlockable (No Quests Required): No
Mailbox number |
Name on the map |
Place |
---|---|---|
1 |
Caldera |
This is on top of Mount Hothead |
2 |
Hot springs |
This is in the upper right part of the map in a beach area |
3 |
Upper Ruins Entrance |
This is just north of the Mount Hothead mailbox, unlocked through the Enraging Ruins quest |
4 |
Mount Hothead |
This is the “central” mailbox, near the entrance to the large ruins Retsuko is usually around |
Gemstone mountain
- Instantly unlockable (no quests required): Yes
Mailbox number |
Name on the map |
Place |
---|---|---|
1 |
Gemstone Corral |
This is slightly north of the Oasis mailbox |
2 |
Oasis |
This is near the boat where the Pompompurin is |
3 |
Gem City |
This is in the center of town, just below the two buildings |
Through questing you will be able to restore the area and bring back some water. This does not affect the placement of the mailboxes.
Icy Peak
- Instantly Unlockable (No Quests Required): No
There are two Icy Peak mailboxes. The first is technically inside Precious stones; this mailbox is located in upper right corner of the map. When you are done A challenging reward, you will be able to enter the area.
There is also a waypoint at the top of Icy Peak. Getting here can be quite a pain, though once the mailbox is unlocked, you can easily travel there.
Merry Meadows
Instantly unlockable (no quests required): No
Mailbox number |
Name on the map |
Place |
---|---|---|
1 |
Merry Meadows Fields |
This is in the lower left corner of the map |
2 |
Merry Meadows Plaza |
This is on the circular island in the center of the map |
3 |
Merry Meadows Overlook |
This is on the small overlook, slightly southwest of the mailbox Plaza |
4 |
Meadows Creation Station |
This is directly to the right of the Mailbox Plaza, near the Creation Station |
5 |
Temple of the Meadows |
This is near the left bridge at the top of the map |
6 |
Meadow Gazebo |
This is on the far right, but you have to unlock the area first This is done by growing a beanstalk |
City city
-
Instantly Unlockable (No Quests Required): Yes
-
This only applies to the three mailboxes at city level
-
Mailbox number |
Name on the map |
Place |
---|---|---|
1 |
Center |
This is north of the main jetty, at the far end of the road |
2 |
City Critter Park |
This is at the bottom edge of the park, which looks like a giant green circle on the right edge of the map |
3 |
City Rooftop |
This is northwest of the park mailbox, on a roof to the right of the green hexagon |
There are three more mailboxes that do not appear on the main map. These three are llies in the drain, with the following name.
- Main drain
- Lower drain
- Upper Drain
The sewer will be unlocked after completing Above and Below. There is none official map of the sewers in the game, but the Hello Kitty Island Adventure community has your back. If you need help navigating the sewers, check out this map from u/ktroma on Reddit, where they share layout of the drain, including the three mailboxes.

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