CDONTS Or CDOSYS UTF-8 Email

I have a form that needs to handle international characters withing the UTF-8
character set. I have tried all the recommended strategies for getting utf-8
characters from form input to email message and I cannot get it to work. I
need to stay with classic asp for this.

Here are some things I tried:

'CDONTS
Call msg.SetLocaleIDs(65001)

'CDOSYS
msg.HTMLBodyPart.Charset = "utf-8"

I included the following meta tag in the email HTML:
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

I also tried modifying the CharSet and CodePage of all involved Request and
Responses.

I was able to Response.Write the form content on post back to the screen and
it was properly rendered. However, none of my efforts can get the email to
render with the correct codebase. I have tried opening the email in Outlook
and Thunderbird. Neither one picks up on the UTF-8 charset meta tag.