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Mixed
Flat
Mixed rounded flat icon
megaphone, sound, notification
Tomato
512x512
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Outline
Miscellaneous
miscellaneous, ring, notification
Black
Business & finance
Office
notification, time, reminder
Technology Mix
Email, notification, notify
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Glyph
Web Icons
Alert, ring, notification
Twitter UI Set
Alert, notification, ring
UI
Basic interface
notification, bell, jingle
Simple Geometric Icons
Text, communicate, Message
iOS7 optimized
Miu
editor, location, flag
notification, stroke, editor
editor, marker, notification
flag, marker, editor
Freeline
Schedule, sound, ringing
Sports & awards
theSquid.ink 40
notification, christmas, Alarm
SandyBrown
352x512
Free basic
envelope, Message, Rss
CadetBlue
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Smooth
Angular UI
notification, flag
YellowGreen
Shopping & e-commerce
3D
Amazon AWS Stencils
Amazon, Services, Email
sns, App, Amazon
Social media
Social circle
mail, send, Email
Linen
Email, mail, send
Tan
Photography & graphic design
Flatified
blog, Comment, Alert
MediumSeaGreen
48 Bubbles
Alert, bell, Alarm
Significon - Social
Advertise, F, Logo
DarkSlateBlue
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Pixel
Simply 8-bits #4
Fast, notification
SteelBlue
96x96