PNG ICO ICNS SVG MORE
UI
Outline
Interface
interface, Letter, Message
Black
512x512
Linecon
send, Email, Letter
mail, Email, Letter
Freeline
envelope, Letter, mail
Valenticons
valenticons, Letter, valentines
ikooni outline: Free Basic
envelope, Spam, Message
Round Black Icons
Letter, Communication, Email
Office icon set
envelope, Communication, mail
Integral
Letter, mail, Message
DarkSlateGray