The icon is a picture of group message. The icon is the shape of two rectangles. The rectangle in front of the other one looks like an envelope. The envelope looking rectangle is slightly lower and to the right of the rectangle behind it.
This Group Message icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office
, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 16,000 icons, all in the same style and quality.