PNG ICO ICNS SVG MORE
Mixed
Outline
Hawcons
download, inbox
Black
512x512
Text, document, inbox
upload, inbox
inbox
document, Text, inbox
LightSlateGray
document, inbox
inbox, upload
Glyph
Material Core
Internet and web
envelope, Message, e-mail
DarkSlateGray
PNG SVG MORE
Pixel
8-Bit
post, inbox, e-mail
Octicons
384x512
PNG ICO ICNS MORE
Flat
Flat Green
Chat, Message, Boxchat
Gainsboro
Email, inbox, Message
MidnightBlue
Entypo
437x512
Cartoon
Mushroom icons
inbox, Mushroom
256x256
Eightyshades
Smooth
Toolbar icon set
Peru
32x32
Retina Display Icons
Silver
64x64
PNG MORE
IconSweets 2
Battery, inbox, Full
40x40
Alarm, bell, inbox
Biu, inbox, outbox
inbox, bell, incoming