Markus Echterhoff

This plugin is as simple as it is useful. Add the widget or use the shortcode <code>[you-have-a-new-message]</code> anywhere to display a notice if the currently logged in user has new messages. The notice links to the user’s inbox as a convenient and omnipresent shortcut.
Message texts can be configured via widget interface and shortcode parameters, e.g. <code>[you-have-a-new-message single="new message" multiple="%s new messages"]</code>.
<h4>Translations:</h4>
<ul>
<li>German</li>
</ul>

You Have a New (BuddyPress) Message

Notify users about new BuddyPress messages (widget & shortcode)

WittyFolk

<a href="http://www.wittyfolk.com/bonjour/" rel="nofollow ugc"> Live demo </a>
Bonjour Bar is a simple and unique WordPress bar and notification plugin to show powerful messages to your customers !
The plugin features
<ul>
<li>3 types of content (WordPress Editor Content, call to action button, Email Subscription )</li>
<li>Cookies options ( days, hours, non)</li>
<li>Two Position ( Top, Button )</li>
<li>Simple grid builder with shortcodes</li>
<li>Unlimited colors</li>
<li>Background image</li>
<li>Gradient image</li>
<li>6 Exit button icons</li>
<li>Body pusher ( bar will not cover the top area of your site )</li>
<li>Beautiful and simple animated admin panel</li>
</ul>

Bonjour Bar

Eye catching Promotion And Notification WordPress Bar !

You Have a New (BuddyPress) Message vs Bonjour Bar