command line e-mail with Chinese Characters

[John Jakus]

We are writing a script that tells users that their password will expire
in 2 weeks and how to change it in various places like network,
GroupWise, PDA, conferencing system...

Problem is that we have Many Chinese so we want the e-mail to be in both
Chinese and English. We are using nail to format the e-mail but it is
always coming through with boxes for the Chinese characters. Any idea
one where the problem is occurring?

Thanks,

John