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Nano
mail, nanosuit
WhiteSmoke
256x256
Aristocracy
mail
32x32
Web Icons
48x48
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SocialShift
64x64
WooCons
Edit, mail
mail, reply
mail, send
mail, remove
mail, Forward
mail, open
Add, mail
receive, mail
Faenza
notjunk, mail, mark
24x24
Boolean
16x16
new, mail
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Spirit20
Closed, mail
20x20
open, mail, Alt
Eloquence!
mail, write
Simple But Sophisticated