PNG ICO ICNS SVG MORE
Social media
Glyph
Snapchat UI - Flat
Message, Comment, Chat
Black
512x512
Twitter UI - Flat
envelope, Message, Chat
Message, inbox, Comments
Message, Chat, inbox
Business & finance
LinkedIn UI - Glyph
Email, Message, inbox
Signs & symbols
Web UI
Circle, messages, Email
Outline style
Email, Message, Chat
Font Awesome
inbox
PNG SVG MORE
Miscellany Web icons
Email, mail, Message
480x512
Mixed
Basic icon element
Message, inbox, Text
sms, Email, mail
Picons Social
google, inbox, mail
google, mail, inbox
UI
Basic interface
Email, mail, inbox
Simple Geometric Icons
inbox, envelope, Chat
PNG MORE
Elysium Icons
mail, Email, inbox
DimGray
24x24
Google Material Design icons
GlyphPack
483x512
Material Core
Free basic
envelope, Message, Rss
CadetBlue
Octicons
384x512
Entypo
437x512
Freecns Cumulus
inbox, tray