Charset property specifies character set of the attachment.
Syntax
[Visual Basic]
objMailAttachment.Charset = "iso-8859-1"
[VBScript]
objMailAttachment.Charset = "iso-8859-1"
[C#]
objMailAttachment.Charset = "iso-8859-1";
[C++]
HRESULT get_Charset(BSTR*);
HRESULT put_Charset(BSTR);
spMailAttachment->PutCharset("iso-8859-1");
Remarks
Charset indicates which character set should be used to display the attachment. Default value of Charset property is an empty string. Only text attachments should have Charset property set.