diff --git a/kfsend.go b/kfsend.go
index 82d86a7..661c322 100644
--- a/kfsend.go
+++ b/kfsend.go
@@ -19,6 +19,9 @@ type sendTxtMsg struct {
 	Text    struct {
 		Content string `json:"content"`
 	} `json:"text"`
+	CustomerService struct {
+		KfAccount string `json:"kf_account"`
+	} `json:"customservice"`
 }
 
 func kfSendTxt(user, txt string) {
@@ -35,6 +38,20 @@ func kfSendTxt(user, txt string) {
 	postJSON(j, u)
 }
 
+func kfSendTxtAs(user, txt, KF string) {
+	u := getKfSendURL()
+
+	s := sendTxtMsg{}
+	s.MsgType = "text"
+	s.Text.Content = txt
+	s.ToUser = user
+	s.CustomerService.KfAccount = KFUsers.kfAcc(KF)
+	//j, _ := json.Marshal(s) // it will escape html < > and & to \u0006
+	j, _ := myJSONMarshal(s) // this reserves < > and &
+	log.Println(string(j))
+	postJSON(j, u)
+}
+
 func myJSONMarshal(t interface{}) ([]byte, error) {
 	buffer := &bytes.Buffer{}
 	encoder := json.NewEncoder(buffer)
diff --git a/kfsend_test.go b/kfsend_test.go
index c1809bd..0124959 100644
--- a/kfsend_test.go
+++ b/kfsend_test.go
@@ -15,7 +15,9 @@ func TestSendTxt(t *testing.T) {
 	// randinit()
 	// msg = RandStringRunes(2048)
 
-	kfSendTxt(toUser, msg)
+	//kfSendTxt(toUser, msg)
+	kfSendTxtAs(toUser, msg, "孙鹏")
+	//kfSendTxtAs(toUser, msg, "kf2002@gh_f09231355c68")
 }
 
 func TestSendPic(t *testing.T) {
diff --git a/main.go b/main.go
index bbea87c..02b29d3 100644
--- a/main.go
+++ b/main.go
@@ -19,6 +19,9 @@ var GlobalPath = PathsConfig{
 	"/tmp/",
 	"/mnt/data/workspace/angular.ts/wechat/ng2-admin/dist/"}
 
+//KFUsers info cache about current customer service
+var KFUsers kfCache
+
 func main() {
 	err := readConfig() //wechat API config
 	if err != nil {
@@ -34,10 +37,11 @@ func main() {
 	}
 
 	setupRootFileServer()
-
 	startSessionManager(2048)
-
+	KFUsers.kfRenewList()
+	//always the last one
 	setupHTTPHandler()
+
 }
 
 func setupHTTPHandler() {