PNG SVG MORE
Mixed
Pixel
8-Bit
post, inbox, e-mail
Black
512x512
PNG MORE
Files & folders
ExplodingBoy Pixel Icons
post
Coral
20x20
CornflowerBlue
LightGray
UI
Windows 8 Pack (Metro Style)
Child, post, new
DarkSlateGray
26x26
post, new
IconSweets 2
card, post, time
40x40
File, card, Zip
PowderBlue
PNG ICO ICNS MORE
Gnome icons
Headings, post, Text
WhiteSmoke
16x16
Message, post
Gainsboro
48x48
Mini
post, envelope, mail