Sets the fallback charsets to try when decoding 8-bit headers.
Note: It is recommended that the list of charsets start with utf-8 and end with iso-8859-1.
a null-terminated list of charsets or null for the default list
Sets the fallback charsets to try when decoding 8-bit headers.
Note: It is recommended that the list of charsets start with utf-8 and end with iso-8859-1.