I have similar problem to the one described in this question: I am using the \"mailto\" protocol to open the default mail client from Java (I am tied to Java 5 for now, so s
You can try this:
There is an option called : Enable UTF-8 support for mailto:protocol in Outlook @
Tools > Options > Mail Format > International Options > [x] Enable UTF-8 support for mailto:protocol
Lets hope it works for you