I would like to preview PDF documents in outlook but I do not want to use the Adobe (or any other 3rd party)  suite to do so.

I can open the documents in Microsoft's 'Reader' but not in the preview pane. I have looked under trust center settings and have an Outlook message and items checked but no pdf preview to check

Running on Surface pro 3, Win 8.1, Office 2013

Hi,

I'm using Office 2013 along with Windows 8.1, I can confirm there is no build-in PDF previewer in Outlook 2013. It seems we have to use some plug-ins to preview PDF in Outlook.

Regards,

Melon Chen
TechNet Community Support