PNG ICO ICNS MORE
Oxygen
Import
Black
48x48
Oxygen-Refit
Import, envelop, Email
128x128
Gnome 2.18 Icon Theme
envelop, Letter, Email
PNG MORE
Gentleface
Import, Doc
PNG ICO MORE
GNOME Desktop
envelop, Import, Message
64x64
PNG ICO ICNS SVG MORE
Computer & hardware
Glyph
Data icons
Access, Import, Server
512x512
UI
Google Material Design icons
Import, Export
PNG SVG MORE
Network & communications
Material Communication
Export, Import
398x512
Shopping & e-commerce
3D
Amazon AWS Stencils
Aws, Import, Delivery
Free Mobile Icon Kit
Gloss Basic Icons
32x32
Business & finance
Smooth
Pretty Office Icon Set Part 6
256x256
Gnome Web Icons
64, mail, Import
Crystal Office Collection
24, Import
24x24
Signs & symbols
Pixel
Kiwi
mail, Import
Import, File
Wireframe mono icons
Gnome icons
Kgpg, Import