PNG ICO ICNS MORE
Desktop apps
Pixel
Seize
mail
WhiteSmoke
16x16
Smooth
Shiny Icon Set
send, mail, envelope
64x64
Quetto
256x256
Application Pack Volume 01
Email, mail, envelope
128x128
3D
Flat for Linux
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Social and web icons
mail, envelope
Ginux
Splashyfish
light, mail
light, mail, Left
Down, light, mail
light, mail, new
mail, light, new
mail, light, right
mail, light, stuffed
mail, light, Up