Disable third party spam admin notifications but still be notified by Magento.
Third party extension developers far too often exploit the admin notification system to insert sales, and other spam messages into your admin panel. It is a frustrating, and often daily annoyance for many store owners to login into admin at the start of the working day only to be greeted with yet another sales related spam message in the notification inbox.
You can of course disable the Notifications module altogether, but then you also do not receive legitimate notifications from Magento about important updates and releases.
Spam Filter disables the ability of third party sources to add notifications to admin, but still allows notices originating from Magento to be added.
Admin settings can be found under System -> Configuration -> Hussey Coding -> Spam Filter and are as follows:
** Filter Spam Notifications** Enable/disable filtering of non Magento admin notifications
If you have any problems with this extension, open an issue on GitHub.
Contributions are welcomed, just open a pull request on GitHub.
Jonathan Hussey http://www.husseycoding.co.uk @husseycoding
OSL - Open Software Licence 3.0
(c) 2015 Hussey Coding