Email Tab Security Warning
By default, windows will show a warning when opening a link from the Email tab as follows:
Some files can contain viruses or otherwise be harmful to your computer. It is important to be certain that this file is from a trustworthy source.
Would you like to open this file?
This is only a warning and hitting OK will launch the email file.
This prompt can be disabled in the windows registry by modify the following key:
The number inside the brackets will be different depending on your version of Outlook.
Change the value to 00 00 01 00