This policy setting allows you to manage whether Internet Explorer uses 8-bit Unicode Transformation Format (UTF-8) for mailto links.If you enable this policy setting Internet Explorer encodes mailto links in UTF-8.If you disable or do not configure this policy setting Internet Explorer sends mailto links encoded through the user's code page. This behavior matches the behavior of Internet Explorer 6 and earlier. The user can change this behavior on the Internet Explorer Tools menu: Click Internet Options click the Advanced tab and then under International select the "Use UTF-8 for mailto links" check box.
Policy path:
Windows Components\Internet Explorer\Internet Control Panel
Scope:
Machine
Supported on:
At least Internet Explorer 7.0
Registry settings:
HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Protocols\Mailto!UTF8Encoding
Filename:
inetres.admx