diff --git a/message.go b/message.go
index f2456c1..ac73d31 100644
--- a/message.go
+++ b/message.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
+	"strconv"
 )
 
 // Message structure for message data
@@ -61,10 +62,14 @@ func (s *Session) GetInbox() ([]Message, error) {
 
 // SendMessage will send a message via post
 func (s *Session) SendMessage(subject string, body string, recipientid string) error {
+	reciever, err := strconv.Atoi(recipientid)
+	if err != nil {
+		return err
+	}
 	payload := map[string]interface{}{
 		"subject":     subject,
 		"body":        body,
-		"recipientId": recipientid,
+		"recipientId": reciever,
 	}
 	data, err := json.Marshal(&payload)
 	if err != nil {