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Desktop apps
Smooth
Farm-fresh
mail, Lock, open
Goldenrod
32x32
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Social and web icons
mail, envelope
WhiteSmoke
64x64
Ginux
mail
iSuite Revoked
CornflowerBlue
512x512
KDE Crystal Diamond
mail, open, envelope
Gainsboro
128x128
Kontact, mail
Black
22x22
mail, delete
Forward, mail
new, mail
mail, Get
to, mail, post
reply, mail
replyall, mail
mail, replylist
send, mail
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Lavender
24x24