PNG ICO ICNS SVG MORE
UI
Glyph
Basic interface
Email, mail, inbox
Black
512x512
PNG MORE
Elysium Icons
Email, envelope, Message
DimGray
24x24
envelope, Message, Email
opened, envelope, mail
Outline
Linecon
mail, Email, Letter
Freeline
envelope, Letter, mail
Valenticons
valenticons, Letter, valentines
ikooni outline: Free Basic
envelope, Spam, Message
Round Black Icons
Letter, Communication, Email
Free basic
envelope, Message, Rss
CadetBlue
Office icon set
Message, envelope
envelope, Communication, mail
Smooth
Snipicons
envelope
PNG ICO ICNS MORE
All Google icons
Goldenrod
128x128
Mimi Glyphs
envelope, mail
16x16
Essen
envelope, Email
32x32
3D
Gmail icons
envelope, gmail, manilla
256x256
Pixel
Fugue Icons
envelope, share
DarkGoldenrod
System Tray Icons v2
envelope, mail, Email
Cologne
Email, envelope
LightSkyBlue
PNG ICO MORE
Gnome Web Icons
mail, envelope, open
LightGray
64x64
unread mail, envelope, mail
Bloggers Vol 1-7
envelope, Add
DarkGray
Email, envelope, Forward