Property Value

Type: Int32
The integer value containing the length of encoded body of the MIME part, or 0 if the MIME part is multipart and thus does not have its own body, or -1 if the body size parameter value in the IMAP4 response could not be parsed.

This is the size of the MIME part body in its encoded state. For instance, if the body is base64 encoded, the encoded data length is approximately 33% larger than the actual data length.