--- /dev/null
+------------0xKhTmLbOuNdArY\r
+Content-ID: <asdfg@asdfg.com>\r
+\r
+<model><data1>asdfg</data1><data2>asdfg</data2></model>\r
+------------0xKhTmLbOuNdArY\r
+Content-ID: <qwert@qwerty.com>\r
+\r
+Attachment file 1\r
+------------0xKhTmLbOuNdArY\r
+Content-ID: <zxcvb@zxcvb.com>\r
+\r
+Attachment file 2\r
+------------0xKhTmLbOuNdArY--\r