TSmtpCli.CharSet

Describes the content-type charset or charset of MIME inline encoded header lines.

• In ICS-V5 and V6 it's just the string value used by the component to form header lines.
• In ICS-V7 and later its value may also trigger charset conversion depending on whether property ConvertToCharset is set or not.
• - With ANSI compilers and ConvertToCharset set to TRUE the component converts MailMessage.Text and header lines from current, system ANSI codepage to the charset specified.
• - With UNICODE compilers ConvertToCharset is always ignored and the UnicodeString is converted to the charset specified.

Since ICS-V7 the component checks whether a charset is supported or not and raises an SmtpException on assignment of an unsupported charset! Assigning an empty string sets the default system charset silently.