Unicode Emoji Display Plugin is a free application developed by 株式会社ACCESS that allows users to view Unicode emojis in their emails. This plugin is perfect for those who are troubled by the appearance of black emojis or squares in their received emails.

By simply installing this plugin, users can now view Unicode emojis in their CosmoSia email app. However, it is important to note that this app does not work alone and must be used with CosmoSia or Intray.

Unicode Emoji Display Plugin is only compatible with Android devices that are below Android 4.4 and receive emails from iPhones or Android devices that are 4.4 and above. It is important to keep in mind that some emojis may not be displayed correctly, and if the plugin does not solve the issue, users can try the "Carrier Emoji Display Plugin".

Overall, Unicode Emoji Display Plugin is a useful tool for those who frequently use emojis in their emails and are looking for a solution to the issue of black emojis or squares appearing in their messages.