PocketKnife Peek

PocketKnife Peek is an Outlook add-in for screening your e-mail as plain text before opening it in Outlook.

The add-in can be used to view all Outlook message formats, but is aimed particularly at averting the threats lurking in HTML mail. A convenient tabbed view lets you easily examine the:

-Message in plain text,
-HTML source (if any),
-Internet header, and -Attachments.