Unicode mails send using CDOSYS & Bodypart show special or funny characters in message body

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Recently I was working with a Customer who uses ASP & CDOSYS to send Unicode content e-mails. He had the following partial code-snippet:

 ...

 Set objMail = Server.CreateObject("CDO.Message") 'Create CDO.Message Object

 Set objBodyPart = objmail.BodyPart 'Create BodyPart

 objBodyPart.Charset = "UTF-8" 'Set relevant Charset

  

 Set objConf = Server.CreateObject("CDO.Configuration") 'Create Configuration Object

 Set objFields = objConf.Fields 'and set its Configuration fields

  

 With objFields 

 .Item("https://schemas.microsoft.com/cdo/configuration/sendusing") = 2 'Send using port or pickup

 .Item("https://schemas.microsoft.com/cdo/configuration/smtpserver") = "localhost" 'Specify SMTPServer

 .Item("https://schemas.microsoft.com/cdo/configuration/smtpconnectiontimeout") = 20 'Specify timeout

 .Item("https://schemas.microsoft.com/cdo/configuration/smtpserverport") = 25 'Specify the port

 .Update 'Update the Configuration

 End With 

  

 With objMail 

 Set .Configuration = objConf 'Set the configuration object

 .From = email 'Set From users

 .To = Trim(recip) 'Set recipients

 .Subject = subject 'Set the subject

 .TextBody = txString 'txtString contains the unicode chars

 End With 

  

 objMail.Send 'Send

 'Release the objects

 Set objFields = Nothing 

 Set objConf = Nothing 

 Set objMail = Nothing 

 ...

But he updated that he can display the information correctly in a web browser using UTF-8 encoding on the web page; But whenever he send the information

via email the Unicode values in the message body show the "special or funny" characters.He also tried setting the charset for the email but it doesn't made any difference.

When we started troubleshooting we found that we need to set the HTMLBodyPart and TextBodyPart Charset in the above code, which resolved the issue.