[Q] What Messaging app is this?

So, I was scrolling through the Carbon UI theme for CM12 by Zyxxeil on the PlayStore and I came across one of the screen shots.

[IMG]Attachment 3515605[/IMG]

Does anyone know what app this is? It's probably being themed with Carbon but I have no clue what the app is and it looks absolutely gorgeous. I want it, bad.

Sent from the Nexus6ix

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