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Mailbox
From MCC Island Wiki
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View and claim items you've received.
The Mailbox, introduced in Patch 0.24.0, is a menu within the Journal where players can receive messages with enclosed items.
These messages often contain important information after patches and issues, and may therefore be used to provide compensation or refunds. It is additionally used for the Grand Auction to return coins when a player is outbid, or to reward the player with the cosmetics they have won if they had the highest bid.
If the player has unclaimed mailbox deliveries, they will periodically receive a reminder message to claim them, with a prompt to run the /mailbox command, which acts as a quick way to access the menu.
Standard Mailbox Messages
Auction Coin Refund: You were outbid, so your spent coins have been refunded.
Auction Won: You were the highest bidder on this auction when it ended, so you won the item.
Mailbox History
Game Pass Migration
With Season 5, we've merged the Game Pass system into our main economy systems, meaning all the cosmetics and rewards are obtainable from new sources, and the amount of stuff you can obtain each day is much greater than before!
As you purchased Premium Road and reached Level 25 of some/all of the passes, we're giving you a bonus Exclusive Cosmetic Crate corrosponding with the game for each pass maxed. Thank you for purchasing and well done for completing the pass!
Delivery Contents
An Exclusive Cosmetic Crate corresponding to the game for each Premium Road Game Pass maxed by the player prior to season 5's release
Receiver
Players who had purchased the Premium Road and Reached Level 25 of at least one Game Pass prior to season 5's release
Date received
28th July 2025
Expiry
N/A
Game Pass Migration
With Season 5, we've merged the Game Pass system into our main economy systems, meaning all the cosmetics and rewards are obtainable from new sources, and the amount of stuff you can obtain each day is much greater than before!
As you purchased the Premium Road of some/all of the Game Passes, we're giving you all unreached/unclaimed rewards from the Premium Road of each purchased pass! Some items may need to be scavenged into new ones of equal value at the Scavengers Hideout.
Delivery Contents
All unreached/unclaimed rewards in each of the player's purchased Premium Road Game Passes
Receiver
Players who had unreached/unclaimed rewards in at least one Premium Road Game Pass prior to season 5's release
Date received
28th July 2025
Expiry
N/A
Season 5 Milestones & Slots Migration (Part 2)
The previous message contained incorrect data for Material Singularities which meant you didn't get these Material Singularities refunded. This mailbox message contains the missing singularities. Sorry for the inconvenience!
Season 5 has reworked and expanded the old Milestones system into the new Style Perks system! Any perk tiers, crafting slots, or quest slots can be re-unlocked through the new system, but any materials you spent on the old system have been refunded to you in this message.
Delivery Contents
All materials spent by the player (except due to a bug)
Receiver
Players who had spent any materials on perk tiers, crafting slots or quest slots prior to season 5's release
Date received
24th July 2025
Expiry
N/A
Recovered Message - 5PL1NT3R
Not a day goes by where I do not think about the times we shared together. I mostly recall our long walks on the beach, and how we laid in the sand, gazing up at the stars.
Do you remember that time you spotted the constellation that looked like a Handsaw? I remember how we were convinced that it was a sign that we were always meant to open Splinter's together. That was fate telling us that we were following the right path together.
Ever since we parted, it feels like the world is out of balance. There is now a tear in the fabric of fate, and it is as big as the hole in my heart. I am sorry for everything I have done. I love you and I want you back. I promise I will be a better man, and I promise I will finally get round to fixing that roof leak!
Now... what button do I have to press to make sure I don't accidentally send this to everybody?
Season 5 changed how Quest Scrolls work and as a result any Quest Scrolls you had equipped before Season 5 were removed during the update process. This message contains a migration of these Quest Scrolls into their equivalent Coin value as if you scavenged them.
Delivery Contents
Coin (amount depends on scavenged scrolls' values)
Receiver
Players who had equipped non-faction scrolls prior to season 5's release
Date received
23rd July 2025
Expiry
N/A
MCC+ Token Pricing Issue (Part 2)
Yesterday, we sent out a mailbox message to you containing compensation for an issue with the pricing of MCC+ Tokens on the webstore. This message only contained half the correct amount of compensation, so this new message contains the rest. Sorry for the inconvenience and thank you again for being a purchaser of the new MCC+ Tokens!
Hello! We made a small mathematical error on the pricing of the x8 MCC+ token package which has now been slightly adjusted to be cheaper by ~$1-2. Because of this, we'd like to send you a gift as an apology for the pricing error. Thank you for being a purchaser of the new MCC+ Tokens!
We're really sorry that we had to put your account on a temporary pause from logging into MCC Island. We've now restored access to your account and this message contains some compensation as an apology for how long it took to get you back online! Thank you again for your patience.
Due to a bug in Season 5, you lost access to some Blueprints that are no longer obtainable. As compensation for the loss, we've automatically put one matching Cosmetic Token into your Infinibag for each of the now missing Blueprints that you had. Also, here's an apologoop to say sorry you were impacted by this bug!
Welcome back to Season 5 for the second time! The downtime is now resolved and the server has been rolled back to just before the Big Gem Mistake. Your daily streak has been preserved (including missed days of gems), but here are some additional gems to compensate for the days you couldn't get online to play and enjoy your MCC+ subscription.
We'll also be sending out another mailbox message later in the week with additional compensation for everyone, not just MCC+ users.
Hello! We made a small mathematical error on the pricing of the x8 MCC+ token package which has now been slightly adjusted to be cheaper by ~$1-2. Because of this, we'd like to send you a gift as an apology for the pricing error. Thank you for being a purchaser of the new MCC+ Tokens!
We're aware of and working on fixing the issues with Crown Level, Style Level, and Trophy Totals. They should be back to normal sometime tomorrow, don't worry, your trophies are fine. Sorry for the inconvenience, please enjoy some goop.
We're very sorry that the roll-out of the Season 5 update took longer than expected. Unfortunately, we ran into some unforeseen database issues that meant we had to take the server offline for longer than we would've liked.
As an MCC+ subscriber, we understand that you may have missed a claim on your chest, or missed out on the XP bonuses that the subscription provides. As an apology, here are some gems to help you along in Season 5!
We're very sorry that the roll-out of the Season 5 update took longer than expected. Unfortunately, we ran into some unforeseen database issues that meant we had to take the server offline for longer than we would've liked.
As an apology, here's a small gift to help kick-start your Season 5 adventure!
As mentioned in the Season 5 launch articles, all materials spent on Milestone Ferk Upgrades, Quest Slots, and Crafting Slots, as well as previously equipped quest scrolls, will be fully and automatically refunded to you via your mailbox within a few days. This also includes premium Game Pass items and the bonus for those who have completed the Game Passes.
Whilst you're waiting for those messages to pop into your mailbox, here's some bonus economy items to get you started!
Season 5 has removed Silver. You can read more about this change on the forums, but this package contains an amount of coins equal to the value of the silver you had before the update.
Delivery Contents
20x Coin for every 1x 1x Silver owned by the player
Receiver
Everyone
Date received
10th July 2025
Expiry
N/A
Material Dust Refund
Season 5 has replaced Material Dust with Material Goop. You can read more about this change on the forums, but this package contains an amount of goop equal to the value of the dust you had before the update.
With Season 5, we've merged the Game Pass system into our main economy systems, meaning all the cosmetics and rewards are obtainable from new sources, and the amount of stuff you can obtain each day is much greater than before!
As you purchased Premium Road and reached Level 25 of some/all of the passes, we're giving you a bonus Exclusive Cosmetic Crate corrosponding with the game for each pass maxed. Thank you for purchasing and well done for completing the pass!
Delivery Contents
An Exclusive Cosmetic Crate corresponding to the game for each Premium Road Game Pass maxed by the player prior to season 5's release
Receiver
Players who had purchased the Premium Road and Reached Level 25 of at least one Game Pass prior to season 5's release
Date received
28th July 2025
Expiry
N/A
Game Pass Migration
With Season 5, we've merged the Game Pass system into our main economy systems, meaning all the cosmetics and rewards are obtainable from new sources, and the amount of stuff you can obtain each day is much greater than before!
As you purchased the Premium Road of some/all of the Game Passes, we're giving you all unreached/unclaimed rewards from the Premium Road of each purchased pass! Some items may need to be scavenged into new ones of equal value at the Scavengers Hideout.
Delivery Contents
All unreached/unclaimed rewards in each of the player's purchased Premium Road Game Passes
Receiver
Players who had unreached/unclaimed rewards in at least one Premium Road Game Pass prior to season 5's release
Date received
28th July 2025
Expiry
N/A
Season 5 Milestones & Slots Migration (Part 2)
The previous message contained incorrect data for Material Singularities which meant you didn't get these Material Singularities refunded. This mailbox message contains the missing singularities. Sorry for the inconvenience!
Season 5 has reworked and expanded the old Milestones system into the new Style Perks system! Any perk tiers, crafting slots, or quest slots can be re-unlocked through the new system, but any materials you spent on the old system have been refunded to you in this message.
Delivery Contents
All materials spent by the player (except due to a bug)
Receiver
Players who had spent any materials on perk tiers, crafting slots or quest slots prior to season 5's release
Date received
24th July 2025
Expiry
N/A
Recovered Message - 5PL1NT3R
Not a day goes by where I do not think about the times we shared together. I mostly recall our long walks on the beach, and how we laid in the sand, gazing up at the stars.
Do you remember that time you spotted the constellation that looked like a Handsaw? I remember how we were convinced that it was a sign that we were always meant to open Splinter's together. That was fate telling us that we were following the right path together.
Ever since we parted, it feels like the world is out of balance. There is now a tear in the fabric of fate, and it is as big as the hole in my heart. I am sorry for everything I have done. I love you and I want you back. I promise I will be a better man, and I promise I will finally get round to fixing that roof leak!
Now... what button do I have to press to make sure I don't accidentally send this to everybody?
Season 5 changed how Quest Scrolls work and as a result any Quest Scrolls you had equipped before Season 5 were removed during the update process. This message contains a migration of these Quest Scrolls into their equivalent Coin value as if you scavenged them.
Delivery Contents
Coin (amount depends on scavenged scrolls' values)
Receiver
Players who had equipped non-faction scrolls prior to season 5's release
Date received
23rd July 2025
Expiry
N/A
MCC+ Token Pricing Issue (Part 2)
Yesterday, we sent out a mailbox message to you containing compensation for an issue with the pricing of MCC+ Tokens on the webstore. This message only contained half the correct amount of compensation, so this new message contains the rest. Sorry for the inconvenience and thank you again for being a purchaser of the new MCC+ Tokens!
Hello! We made a small mathematical error on the pricing of the x8 MCC+ token package which has now been slightly adjusted to be cheaper by ~$1-2. Because of this, we'd like to send you a gift as an apology for the pricing error. Thank you for being a purchaser of the new MCC+ Tokens!
We're really sorry that we had to put your account on a temporary pause from logging into MCC Island. We've now restored access to your account and this message contains some compensation as an apology for how long it took to get you back online! Thank you again for your patience.
Due to a bug in Season 5, you lost access to some Blueprints that are no longer obtainable. As compensation for the loss, we've automatically put one matching Cosmetic Token into your Infinibag for each of the now missing Blueprints that you had. Also, here's an apologoop to say sorry you were impacted by this bug!
Welcome back to Season 5 for the second time! The downtime is now resolved and the server has been rolled back to just before the Big Gem Mistake. Your daily streak has been preserved (including missed days of gems), but here are some additional gems to compensate for the days you couldn't get online to play and enjoy your MCC+ subscription.
We'll also be sending out another mailbox message later in the week with additional compensation for everyone, not just MCC+ users.
Hello! We made a small mathematical error on the pricing of the x8 MCC+ token package which has now been slightly adjusted to be cheaper by ~$1-2. Because of this, we'd like to send you a gift as an apology for the pricing error. Thank you for being a purchaser of the new MCC+ Tokens!
We're aware of and working on fixing the issues with Crown Level, Style Level, and Trophy Totals. They should be back to normal sometime tomorrow, don't worry, your trophies are fine. Sorry for the inconvenience, please enjoy some goop.
We're very sorry that the roll-out of the Season 5 update took longer than expected. Unfortunately, we ran into some unforeseen database issues that meant we had to take the server offline for longer than we would've liked.
As an MCC+ subscriber, we understand that you may have missed a claim on your chest, or missed out on the XP bonuses that the subscription provides. As an apology, here are some gems to help you along in Season 5!
We're very sorry that the roll-out of the Season 5 update took longer than expected. Unfortunately, we ran into some unforeseen database issues that meant we had to take the server offline for longer than we would've liked.
As an apology, here's a small gift to help kick-start your Season 5 adventure!
As mentioned in the Season 5 launch articles, all materials spent on Milestone Ferk Upgrades, Quest Slots, and Crafting Slots, as well as previously equipped quest scrolls, will be fully and automatically refunded to you via your mailbox within a few days. This also includes premium Game Pass items and the bonus for those who have completed the Game Passes.
Whilst you're waiting for those messages to pop into your mailbox, here's some bonus economy items to get you started!
Season 5 has removed Silver. You can read more about this change on the forums, but this package contains an amount of coins equal to the value of the silver you had before the update.
Delivery Contents
20x Coin for every 1x 1x Silver owned by the player
Receiver
Everyone
Date received
10th July 2025
Expiry
N/A
Material Dust Refund
Season 5 has replaced Material Dust with Material Goop. You can read more about this change on the forums, but this package contains an amount of goop equal to the value of the dust you had before the update.
Due to a bug in the mailbox system, the "MCC+ Token Package" message on July 11th, 2025 was mistakenly sent to all playersand was duplicated five times.
In an effort to revert the mistakes, another bug resulted in gems being removed in excess from every player that logged on since 0.24.0. As such, the developers were ultimately forced to shutdown the server in order to rollback the database to the moment before the erroneous messages were sent out.
This mistake also occurred at the same time as the 'Season 5 release' marketing communications.
The "Recovered Message - 5PL1NT3R" message was sent as compensation for the downtime.
Non-auction related mailbox messages now have a generic mail item instead of the contained package. We’re hoping this will encourage people to read the messages rather than spam claiming, as the messages contain important information!
Mailbox, introduced in Patch 0.24.0, is a menu within the 
Journal where players can receive messages with enclosed items.
Auction Coin Refund: You were outbid, so your spent coins have been refunded.
Mr.Rusty Neils to 
Ms.Ann ex-Neils, the divorced owners of Splinter's Workshop.
