Provides a way to add dynamic contact information that includes more than just the admin email. Includes shortcodes and theme functions. For complete usage instructions see: http://www.reitzdesigns.com/2010/06/rd-contact-info-plugin/

RD Contact Information

Provides a simple way to add dynamic contact information to posts and pages. This provides a way to add information beyond just the admin email.

Remi Corson

This plugin helps admins to easily create admin notification inside the WordPress administration.
You can choose many options and decide how and where to display the notifications.

Easy Admin Notification

Tested up to 3.3.1 Stable Tag: 1.4 Adds the ability to create easily notification in the admin panel

RD Contact Information vs Easy Admin Notification