diff --git a/unify/message.go b/unify/message.go
index e483524..074cbaf 100644
--- a/unify/message.go
+++ b/unify/message.go
@@ -24,8 +24,14 @@ func NewMessage(addreess string, token string, sender string) *Message {
 	}
 }
 
-func (m *Message) Send(receiver, content string) error {
-	reqUrl := fmt.Sprintf("%s/admin/message/send?sender=%s&receiver=%s&content=%s", m.address, m.sender, receiver, url.QueryEscape(content))
+func (m *Message) Send(args ...string) error {
+	var receiver, content, fingerprint string
+	if len(args) == 2 {
+		receiver, content = args[0], args[1]
+	} else if len(args) > 2 {
+		receiver, content, fingerprint = args[0], args[1], args[2]
+	}
+	reqUrl := fmt.Sprintf("%s/admin/message/send?sender=%s&receiver=%s&fingerprint=%s&content=%s", m.address, m.sender, receiver, fingerprint, url.QueryEscape(content))
 	body, err := util.HttpGet(reqUrl, map[string]string{
 		"x-token": m.token,
 	})