Mindshare Labs, Inc.

<p>Allows WordPress users to subscribe to email notifications for new posts, pages, and custom types, filterable by taxonomies. The plugin supports tons of actions and filters too! More documentation will be coming soon.</p>
<h4>Features</h4>
<p>We are now working on a major rewrite of this plugin which will allow us to more rapidly roll out new features. Stay tuned for version 0.2.</p>
<ul>
<li>send mail as plain text or HTML (by user preference)</li>
<li>integrated email template editor</li>
<li>option to use PHP template instead of integrated template editor</li>
</ul>
<h4>Upcoming Features</h4>
<ul>
<li>option to separate different taxonomies on profile update</li>
<li>widget</li>
<li>option to post notifications for update as well as new posts</li>
<li>html/plain text options</li>
<li>scheduling options / digest mode</li>
<li>analytics options</li>
<li>minimum role option for notifications</li>
<li>double opt-in</li>
<li>SMS text messages</li>
<li>integration with 3rd-party SMTP servers and/or advanced SMTP settings</li>
<li>integration with MailChimp/Mandrill</li>
<li>integration with Constant Contact</li>
<li>integration with Aweber</li>
<li>notification on site (like Facebook)</li>
<li>subscriber management to settings</li>
<li>CSV subscriber export</li>
<li>list management for Roles, use-case wholesale / retail</li>
</ul>
<p>Support development with a donation and let us know what features are most important to you!</p>


Subscribr

Allows WordPress users to subscribe to notifications for new posts, pages, and custom types, filterable by taxonomies.

Andrew Norcross

Reaktiv

<p>Content Update Notification allows your site to notify nearly anyone by email anytime a post or page is added or updated.</p>
<p>You can customize your email alerts with the following fields:</p>
<ul>
<li>Name of your website</li>
<li>Name of the content area edited</li>
<li>Time the content was edited</li>
<li>A link to the page that was edited</li>
<li>The username of the user who edited the content</li>
</ul>
<p>This plugin is ideal for administrators who have multiple content authors and need to be alerted to content changes for review or regulatory compliance.</p>


Content Update Notification

Content Update Notification allows your site to notify nearly anyone by email anytime a post or page is added or updated.

Subscribr vs Content Update Notification