sahaskatta

When enabled, the admin email address gets a message including the title, author, time stamp, category, tags, and content of each post as it gets published. Edits to published posts are also emailed.
Why use this?
<ul>
<li>Keeps the admins aware of all new content</li>
<li>Notifications when published posts are modified</li>
<li>Enable with just one-click, no hassle</li>
<li>No bloat, uses a simple PHP Mail command</li>
<li>An extra layer of backup if backups are lost</li>
</ul>
Notice: This isn’t by any means an alternative or replacement for regular database and file backups.

ST Email Backup For Published Posts

This plugin emails the admin email account a copy of each post as it gets published.

Xosen

When a post is published or updated, this plugin will send a backup email to the administrator of the WordPress 
blog with an attachment file that contains the post in XML format. The XML follows the format used when WordPress 
exports blog contents so that it can be easily used to restore the post.
The general idea of this plugin is to never loose any of your posts. If you have scheduled a backup of your 
blog once a week, its possible that you will loose the new posts published during that last week. With this 
plugin you will have a backup of all your new published posts in your email account.

New Post Automatic XML Backup by Email

When a post is published, a backup email is send to the admin with the post content in XML format.

ST Email Backup For Published Posts vs New Post Automatic XML Backup by Email