bbPress Notify Admins plugin notifies all site admins when a new topic is created or a new reply is posted on the bbPress based forums.

The Post Status Notifications plugin by 99 Robots provides an easy way to notify Administrators when Contributors submit posts for review or when a Contributor post is published.

The contact form plugin with dynamic fields, reCAPTCHA and other features that makes it easy to add custom contact form on your site in a few clicks