Binary data transfer Original SMTP supports only a single body of ASCII text, therefore any binary data needs to be encoded as text into that body of the message before transfer, and then decoded by the recipient. Binary-to-text encodings, such as uuencode and BinHex were typically used.
Binary data transfer Original SMTP supports only a single body of ASCII text therefore any binary data needs to be encoded as text into that body of the message before transfer and then decoded by the recipient Binary-to-text encodings such as uuencode and BinHex were typically used