Answer by nickmorse

Check this out: http://www.red-gate.com/messageboard/viewtopic.php?t=8839 I believe it's functioning as expected. It looks to me like it's the database mail message queue handler. I did: SELECT count(*) FROM [msdb].[dbo].[sysmail_mailitems] And i had 11360 items. When I looked at the storage size, it was about 5MB. Not that large considering it's a 1TB data warehouse. I would say ignore.