PNG ICO ICNS MORE
Desktop apps
Pixel
Splashyfish
mail, light, stuffed
WhiteSmoke
16x16
mail, light, Up
UI
Tango
Forward, mail
32x32
junk, Not, mail
Gainsboro
mark, paper, junk
Message, new, mail
Sender, mail, reply
Black
mail, reply, All
send, receive, mail
internet, mail
mail, Attachment
Linspire Clear
mail, new
LightGray
22x22
mail, replylist
Silver
Vaga
mail, open, envelope
Gray
PNG MORE
Mixed
Twotiny
mail, envelope
Lavender
13x13
envelope, mail
Evelope, Lock, mail
mail
SaddleBrown
10x10
Computer & hardware
ASP.NET icons
mail, Add
LightSteelBlue
mail, delete
Edit, mail
Add, mail
DarkGreen
LightSlateGray