You can chat with other Island owners if you are in the same union with them.
Unfortunately, you cannot communicate with other players.

Find the button in the upper left-hand corner of the screen with the text message icon. After pushing it, you will see your union’s chat window where its members can chat with each other.

An indicator will alert you about new messages in the chat.

There are no limits to what you can write in messages; you can share your game achievements with other union members, or just wish them a good day. We do urge you to be civil and to refrain from using profanity. Messages containing obscene language will be deleted. If you excessively use such messages, we will be forced to block your account.