diff --git a/pop3proto.go b/pop3proto.go
index 9f8f6d3..ecbb56b 100644
--- a/pop3proto.go
+++ b/pop3proto.go
@@ -37,6 +37,10 @@ type Reader struct {
 	R *textproto.Reader
 }
 
+func NewReader(r *bufio.Reader) *Reader {
+	return &Reader{R: textproto.NewReader(r)}
+}
+
 func (r *Reader) ReadLine() (string, error) {
 	return r.R.ReadLine()
 	// for debug
@@ -108,6 +112,10 @@ type Writer struct {
 	W *bufio.Writer
 }
 
+func NewWriter(w *bufio.Writer) *Writer {
+	return &Writer{W: w}
+}
+
 func (w *Writer) WriteLine(format string, args ...interface{}) error {
 	var err error