If you are looking for the best WordPress plugin to backup your website then I have to tell you about BackupBuddy. BackupBuddy is without a doubt the #1 plugin solution for backing up your WordPress database, restoring, and even migrating your site to another server. This plugin allows you to backup your database, or your complete site. You can then upload your backup to your own server, Amazon S3, FTP account, or even send backups by email.