By default, Outlook uses the format specified by the user when sending e-mail messages, including when sending S/MIME messages. By enabling this setting, you can change this behavior so that Outlook always uses Rich Text formatting when sending S/MIME messages.
Registry Hive | HKEY_CURRENT_USER |
Registry Path | Software\Policies\Microsoft\Office\12.0\Outlook\Security |
Value Name | ForceTNEF |
Value Type | REG_DWORD |
Enabled Value | 1 |
Disabled Value | 0 |