Not sure what version of Outlook you're using, but in Outlook 2010 there's an "Ignore" button in the "Delete" group under the Home tab. From there you can choose to ignore the thread.
If you're using Outlook's "Conversation" view, you can access the Ignore option by right-clicking on the message thread, according to this article.
Answer
Jodie,
Not sure what version of Outlook you're using, but in Outlook 2010 there's an "Ignore" button in the "Delete" group under the Home tab. From there you can choose to ignore the thread.
If you're using Outlook's "Conversation" view, you can access the Ignore option by right-clicking on the message thread, according to this article.
Hope one of these works!