PNG ICO ICNS MORE
Desktop apps
Smooth
Farm-fresh
envelope, String
Khaki
32x32
envelope
Shiny Icon Set
send, mail, envelope
WhiteSmoke
64x64
mail, Message, envelope
Black
envelope, Money, In
LightCyan
Application Pack Volume 01
Email, mail, envelope
128x128
PNG MORE
Ciceronian
mail, Email, newsletter
Gainsboro
59x60
PNG ICO MORE
Social and web icons
mail, envelope
One bit
envelope, Email
48x48
Goldenrod
Web injection
Email, envelope
KDE Crystal Diamond
mail, open, envelope
22x22