General Setting Allow Multiple Email Notification

WordPress Version: WordPress 3.2.1

Settings -> General
http://www.example.org/wp-admin/options-general.php

I would like to have multiple email address in the Email Address textbox.

I tried abc@abc.com, xyz@xyz.com, after I save it. It become abc@abc.comxyz@xyz.com

How can I allow multiple email on that field?

We need this function because we have multiple admin in the website.

It’s not really a WP-specific solution, but if you set up a Gmail address (and likely others), you could create a filter to automatically forward notifications generated by WordPress to other admins.

Short of WordPress adding multi-email notifications, that might be a workaround to temporarily solve the problem.