PNG ICO ICNS MORE
Desktop apps
Pixel
envelope, Email, Letter
Lavender
16x16
PNG MORE
Mixed
Twotiny
mail, envelope
13x13
envelope, mail
UI
Fugue Icons
envelope, Message, Letter
32x32
Silk
phone, Email, envelope
envelope, Email, Add
Attach, Email, envelope
Email, delete, envelope
Email, envelope, Error
respond, envelope, share
envelope, Email, open
Email, Link, envelope
open, Email, image