Mark Jaquith

This plugin notifies people when the comment they just left is moderated or marked as spam. The method of notification can be either a Javascript popup, or an HTML notification in the comment area. You can choose whether spam comments, moderated comments, or both will result in the notification. This is especially useful for spam comments, as the human author will know to contact you and have you rescue the comment from the spam bin.

Antispam Collateral Condolences

Notifies people when their comment is moderated or caught as spam, so they aren't left wondering.

Syam Mohan

Want to display a notification about a promotion or a news? WPFront Notification Bar plugin lets you do that easily.
<a href="http://wpfront.com/notification-bar-pro/" rel="nofollow ugc">Upgrade to PRO</a> to create multiple bars and to use advanced editor.
<h3>Features</h3>
<ul>
<li>Display a message with a button (optional).</li>
<li>Processes shortcodes.</li>
<li>Button will open a URL or execute JavaScript.</li>
<li>Position the bar on top or bottom.</li>
<li>Can be fixed at position (Sticky Bar).</li>
<li>Display on Scroll option.</li>
<li>Set any height you want.</li>
<li>Set the number of seconds before the bar appears.</li>
<li>Display a close button for the visitor.</li>
<li>Set the number of seconds before auto close.</li>
<li>Colors are fully customizable.</li>
<li>Display a Reopen Button.</li>
<li>Select the pages/posts you want to display the notification.</li>
<li>Select the user roles you want to display the notification.</li>
<li>Set Start and End dates.</li>
<li>Hide in Small Devices.</li>
</ul>
Visit <a href="https://wpfront.com/wordpress-plugins/notification-bar-plugin/wpfront-notification-bar-troubleshooting/" rel="nofollow ugc">WPFront Notification Bar Troubleshooting</a> page for troubleshooting steps.
Visit <a href="http://wpfront.com/notification-bar-plugin-settings/" rel="nofollow ugc">WPFront Notification Bar Settings</a> page for detailed option descriptions.

WPFront Notification Bar

Easily lets you create a bar on top or bottom to display a notification.

Antispam Collateral Condolences vs WPFront Notification Bar