kengher

Broadcast simple, important alerts across your multisite network. Also great for single sites.
Features of Site Alert: 
* Display alert(s) in the Homepage with option to show in all pages of a site. 
* Native WordPress WYSIWYG message creation box for simplicity with media support. 
* Choice of hardcoded at the different parts of the page, or make it a pop-up modal. 
* Indicate different priority levels (colors) and icons. 
* Set a date range to publish/unpublish the alert.
Features as a Network Admin 
* Show alert across all all sites in your multisite network. 
* Exclude alert(s) from certain sites. 
* Site Groups manager to provide easier bulk exclusions.

Super Simple Site Alert

Broadcast simple, important alerts across your multisite network. Also great for single sites.

Rafael Mardojai CM

Use responsives alert boxes with shortcodes. 
Is easy, only use the shortcode.
Example: For a info message use: 
 [alert type=”success”]Your text here[/alert] 
Also you can change the icon size: 
 [alert type=”success” icon-size=”big”]Your text here[/alert]
Shortcode attributes:
<ul>
<li>
type (defines the style of the alert box):
<ul>
<li>info (display a info style box)</li>
<li>success (display a success style box)</li>
<li>warning (display a warning style box)</li>
<li>danger (display a danger style box)</li>
</ul>
</li>
<li>
icon_size (defines the icon size):
<ul>
<li>normal (icon normal size)</li>
<li>small (icon small size)</li>
<li>big (icon big size)</li>
<li>hide-icon (no display the icon)</li>
</ul>
[alert type=”type” icon-size=”icon-size”]Your text here[/alert]
</li>
</ul>
<ul>
<li>Demo & Examples: http://www.rafael.mardojai.com/simple-alert-boxes-plugin/</li>
<li>Github repository: https://github.com/mardojai/Simple-Alert-Boxes-Wordpress-Plugin</li>
</ul>

Simple Alert Boxes

Nice

Use responsives alert boxes with shortcodes.

Super Simple Site Alert vs Simple Alert Boxes