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Oxygen
envelope, mail, Message
Lavender
48x48
Nuvola
mail, Letter, Email
mail, envelop, Letter
128x128
Silk
envelope, envelop, Email
16x16
Message, delete, remove
open, envelop, picture
Message, envelope, Letter
Email, Letter, envelop
Letter, envelop, mail
Message, Letter, mail
Attach, mail, Letter
Minicons
Letter, Message, envelope
Diagona
Fugue
envelope, Message, mail
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Mixed
Flat
Flat Design Icons (Set 1)
campaign, Email, mail
512x512
Social media
Micon Social Pack
envelope, Email, Message
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3D
Webtoys
Email, envelope, mail
64x64
PNG MORE
Upojenie
mail, envelope, Letter
60x60
Business & finance
Arzo
envelope, Email
UI
Smooth
Matte set: Basic
32x32
Desktop apps
mail, envelope, windows live mail
Pixel
envelope, Email, Letter
Twotiny
mail, envelope
13x13