PNG MORE
Austerity
Apple, com, Stamp
LightSteelBlue
59x60
PNG ICO ICNS MORE
Computer & hardware
Photorealistic
Free 3d Printer Icon Set
makerbot, Impress, Run
512x512
Desktop apps
Flat
Appicns
mail, Email, Stamp
512x513
UI
Pixel
Fugue Icons
Stamp, Folder, Blue
16x16
Mixed
Smooth
mail, Stamp