However, you must configure Outlook 2010 to use Unicode UTF-8 text encoding to combine non-Latin characters with English characters in email messages. Enabling UTF-8 encoding in Outlook also ...

If you have viewed a Web page containing strange characters you did not understand, you may have seen Unicode characters. Unicode consists of a character set that covers most languages in the world.

It supports UTF-8, UTF-16, UTF-32, UCS-2 and other Unicode encodings as well as emoji characters. On the same page you will find other useful Unicode tools.