Hi there, I have done the Account exchange in POP3 from my gmail account, the inbox received Vietnamese emails is properly but I could not type Vietnamese in composed email although the Vietnamese is properly in the other office applications e.g word, excel, powerpoint, and all of the other applications IE, chrome...(I am currently use the UNIKEY 4.0 with Unicode and VNI type for encoding) I have tried to setting Outlook but does not success, please help to solve this problem.

Thanks and Warm Regards

Have you looked at this https://social.technet.microsoft.com/Forums/office/en-US/2ced43bf-a94b-45b0-95e9-7d6d72b9c509/inconvinience-in-typing-vietnamese?forum=w8itprogeneral?