Idea of Reply Icon
There is a sealed envelope with an arrow laying slightly above the envelope's bottom edge. The arrow has a curved end, and its front is pointing towards one side of the envelope.
This Reply icon has Android KitKat style
. If you use the icons for Android apps, we recommend using our latest Material Icons icon pack (please check our sidebar on the right). Otherwise, it's a solid icon pack that looks good in small resolutions, either on the web or in print. It's characterized by thick lines, smooth corners, and is optimized for 24x24 pixels.