GMail filter to mark annoying HipChat @ALL emails as read automatically.

mailFilters.xml

<?xml version='1.0' encoding='UTF-8'?><feed xmlns='http://www.w3.org/2005/Atom' xmlns:apps='http://schemas.google.com/apps/2006'>
  <title>Mail Filters</title>
	<id>tag:mail.google.com,2008:filters:1357827393586</id>
	<updated>2013-01-10T14:16:38Z</updated>
	<author>
		<name>Ben Burton</name>
		<email>[email protected]</email>
	</author>
	<entry>
		<category term='filter'></category>
		<title>Mail Filter</title>
		<id>tag:mail.google.com,2008:filter:1357827393586</id>
		<updated>2013-01-10T14:16:38Z</updated>
		<content></content>
		<apps:property name='from' value='[email protected]'/>
		<apps:property name='subject' value='@all'/>
		<apps:property name='shouldMarkAsRead' value='true'/>
	</entry>
</feed>