The CodePage property specifies how strings are encoded in the intrinsic objects. A code page is a character set that can include numbers, punctuation marks, and other glyphs. Codepages are not the same for each language. Some languages such as Japanese and Korean have multi-byte characters, while others like English and German only need one byte to represent each character. The CodePage property is read/write.
Sets or returns an Integer value.
Setting Response.CodePage explicitly affects the current content, where
Mail.CodePage affects all content of a mail message.
Settings the CodePage will automatically set the corresponding Charset,
however the Charset can be specifically specified if needed.
You can find codepage values at MSDN
Web Workshop under the column for FamilyCodePage.
Charset, Mail.CodePage, Mailing.CodePage