How to insert smiley face in notification message received by Outlook

Document ID : KB000122410
Last Modified Date : 05/12/2018
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We want to allow the insertion of smiley faces in notification message that are received by Microsoft Outlook but the Outlook security prohibits the display of these.  How can we allow it?
Use the Wingdings font in the html message. Outlook 2010 can then display the smiley face images.
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