Internet Direct (Indy) Version 9.0.1 Beta
TIdMessage.ContentTransferEncoding
Specifies the MIME encoding for the message.

property ContentTransferEncoding: string;
Description
ContentTransferEncoding is a String property that specifies the MIME encoding used to represent data in a message for transfer using a mail transport protocol. Common values for ContentTransferEncoding include the following:

Use ContentType to determine the oringinal media type and character set for a message.