Mailbox

The mailbox is a service in the Splatoon hub that allows players to create drawings and share them via social media.

The drawings may be viewable by other players and may be displayed as signs or graffiti in the hub and in various stages.

During Splatfest, players could post drawings that may appear during the event.

Splatoon
In Splatoon, players could post to Miiverse's Splatoon community from the mailbox in Inkopolis Plaza, either with text or a drawing, both of which were created on the GamePad. It is located between Ammo Knights and the Inkopolis Tower. Close left to the mailbox, the Splatfest booth was held before and during Splatfests.

The Miiverse service has been shutdown and it is no longer possible to draw posts in Inkopolis Plaza.

Splatoon 2
In Splatoon 2, players are now able to share their posts on social media in Facebook or Twitter. The mailbox is located between the headgear shop Headspace and the weapon shop Ammo Knights. The Splatfest booth is close-by near the center of Inkopolis Square.

Splatoon 3
A mailing stand with a mailbox can be seen from the promotional images of the main hub in Splatoon 3, Splatsville. It is currently not known if the feature returns or if there are changes to it.