Sounds like spam- do you have a junk or spam filter?
It can be set up to filter out those kinds of things and automatically send them to a junk folder or delete them.
If sent to Junk folder then you can double check to make sure nothing important gets sent by accident.
And you can set the Junk folder to auto delete after so many days or months, so you don't have to do it manually.

this site has a tutorial of how to set it up-
http://www.berkshire.net/support/fil...okexpress.html

this one looks good too-
http://www.zerobeat.net/qrp/docs/outlookfolders.html