This is neat, but Outlook is not really "designed" to be a web browser - are there negative security implications in doing this? (Such as scripting controls that a normal browser knows to block, but Outlook doesn't. Is the engine based on IE, or how are vulnerabilities patched?)
Also, could there be any way that the websites within Outlook could access your email, that they couldn't in a separate browser?
I would suggest only doing this for very trusted websites.
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