PNG ICO MORE
UI
3D
Gnome Web Icons
unread mail, envelope, mail
Black
64x64
PNG ICO ICNS MORE
Business & finance
Sunny Day
Filter, junk, Email
400x400
Avatars & smileys
X-mac
Email, junk, Filter
Computer & hardware
3D icons
Mailbox, Email
256x256
Shopping & e-commerce
Plastic
Email, envelope
Plastic XP
Filter, Firewall, Block
Mixed
Stroke
Block, Email
Network & communications
BeOS
Email, beos
128x128
envelope, Email, mail
Email, envelope, mail
Email, Message, Hand
Origami
Email
Nuvola
Email, mozilla, Thunderbird
Crystal Clear
newsletter, mail, Email