PNG ICO ICNS MORE
UI
Flat
Flat UI Free
open, Email, mail
WhiteSmoke
200x200
Handdrawn
Hand Drawn Web Icon Set
Email, opened
128x128
Smooth
Snowish
mail, Email, envelope
Email
Pixel
WooFunction Icon set
32x32
Email, Close
Email, Forward
Sweetie Web Communication
Email, Letter
16x16