PNG ICO ICNS MORE
Oxygen-Refit
for, followup, Letter
SteelBlue
128x128
envelop, flag, followup
YellowGreen
Gnome 2.18 Icon Theme
envelop, for, flag
Black
48x48
done, Email, mail
Human-O2
flag, stock, Message
UI
Pixel
Gnome icons
followup, for, flag