PNG ICO ICNS MORE
UI
3D
Gnome Web Icons
48, mail, Forward
WhiteSmoke
48x48
media, 48, Gnome
Smooth
Snowish
Forward, ltr, media
128x128
Forward, media, rtl
Pixel
WooFunction Icon set
Email, Forward
32x32
PNG MORE
BWPX
Forward, Slash
18x18
Tango
Forward, mail