PNG ICO ICNS MORE
Essen
Email
Goldenrod
32x32
Simplicio
mail, envelop, Message
128x128
Error, wrong, exclamation
Aqua Gloss
mail, Email, Letter
Email, mail, Letter
Human-O2
Letter, Email, envelop
Onebit I
Message, Email, Letter
48x48
iD
Letter, envelop, Email
256x256
PNG MORE
Desktop apps
Flat
Social Media icons
64x83
Social media
New Social Media icons
512x512
UI
Smooth
envelope, Email
Mixed
envelope, mail, Email
One bit