When I receive emails from @name I usually open my response with "Dear $name[0]" but I know better than to do that with Asian-sounding names. However, I never

When I receive emails from @name I usually open my response with "Dear $name[0]" but I know better than to do that with Asian-sounding names. However, I never knew exactly what to do instead, so I've always chickened out and went with the full "Dear @name" in the same order that I was given the names. I hoped this would enlighten me as to the appropriate way to go, but I clearly overestimated the homogeneity of Asian name conventions!