PNG ICO ICNS MORE
UI
Smooth
Ultimate Gnome
mark, read, mail
Gainsboro
256x256
Music & multimedia
Soft Icons
school, read, dictionary
WhiteSmoke
128x128
Computer & hardware
3D
Human o2
Message, new, messages
inbox, read, mail
Books, school, learn
Peru
Pixel
Gnome icons
Only, open, read
Black
16x16
read, mail, Hide
Mixed
Feedicons v 2
As, mark, read
Silver
read, mark, As
32x32
Carpelinx
view, Eye wear, read
DarkSlateGray
Glasses, read
64x64