gigorok

This plugin allow to backup files and database and sends them to your email. 
You can setup a periodically backup.

Backup2Email

This plugin allow to backup files and database and sends them to your email

Anthony

Alex and Anthony

WP Backup is a plugin that allows you to easily preform an sql backup and and create a tar and gzipped backup of your /wp-content/ directory from within your dashboard. The plugin is very secure and only allows administrators to preform a backup. 
 This plugin allows you to create a backup and download it or upload it to your Dropbox account or email it to the administrator as an attatchment. This plugin also works great and has been tested on blogs with thousands of posts.
The best way to get fast support is by posting your question in a comment at http://anthony.strangebutfunny.net/my-plugins/alex-wp-backup/

WordPress SQL Backup

WP Backup is a plugin that allows you to easily preform an sql backup and and create a tar and gzipped backup of your /wp-content/ directory from with …

Backup2Email vs WordPress SQL Backup