diff --git a/component/threema/receive.go b/component/threema/receive.go
index a6ef42b..64b38c5 100644
--- a/component/threema/receive.go
+++ b/component/threema/receive.go
@@ -19,13 +19,14 @@ func (a *Account) receiver(out chan<- stanza.Packet) {
 			out <- xMSG
 			continue
 		}
-		sender := receivedMessage.Msg.Sender().String()
+		header := receivedMessage.Msg.Header()
+		sender := header.Sender.String()
 		if string(a.TID) == sender {
 			continue
 		}
 		if p, err := a.receiving(receivedMessage.Msg); err != nil {
 			xMSG := stanza.NewMessage(stanza.Attrs{Type: stanza.MessageTypeChat, From: sender, To: a.XMPP.String()})
-			xMSG.Body = fmt.Sprintf("error on decoding message: %s\n%v", err, receivedMessage.Msg.Serialize())
+			xMSG.Body = fmt.Sprintf("error on decoding message: %s\n%v", err, receivedMessage.Msg)
 			out <- xMSG
 		} else if p != nil {
 			out <- p
@@ -40,77 +41,77 @@ func requestExtensions(xMSG *stanza.Message) {
 }
 
 func (a *Account) receiving(receivedMessage o3.Message) (stanza.Packet, error) {
+	header := receivedMessage.Header()
+	sender := header.Sender.String()
 	logger := log.WithFields(map[string]interface{}{
-		"from": receivedMessage.Sender().String(),
+		"from": header.Sender.String(),
 		"to":   a.XMPP.String(),
 	})
 	switch msg := receivedMessage.(type) {
 	case o3.TextMessage:
-		sender := msg.Sender().String()
-		xMSG := stanza.NewMessage(stanza.Attrs{Type: stanza.MessageTypeChat, From: sender, To: a.XMPP.String(), Id: strconv.FormatUint(msg.ID(), 10)})
-		xMSG.Body = msg.Text()
+		xMSG := stanza.NewMessage(stanza.Attrs{Type: stanza.MessageTypeChat, From: sender, To: a.XMPP.String(), Id: strconv.FormatUint(header.ID, 10)})
+		xMSG.Body = msg.Body
 		requestExtensions(&xMSG)
 		logger.WithField("text", xMSG.Body).Debug("send text")
 		return xMSG, nil
+	/*
+		case o3.AudioMessage:
+			if a.threema.httpUploadPath == "" {
+				return nil, errors.New("no place to store files at transport configurated")
+			}
+			data, err := msg.GetAudioData(a.Session)
+			if err != nil {
+				logger.Warnf("unable to read data from message: %s", err)
+				return nil, err
+			}
+			xMSG, err := a.FileToXMPP(sender.String(), header.ID, "mp3", data)
+			if err != nil {
+				logger.Warnf("unable to create data from message: %s", err)
+				return nil, err
+			}
+			xMSG.Type = "chat"
+			requestExtensions(&xMSG)
+			logger.WithField("url", xMSG.Body).Debug("send audio")
+			return xMSG, nil
 
-	case o3.AudioMessage:
-		if a.threema.httpUploadPath == "" {
-			return nil, errors.New("no place to store files at transport configurated")
-		}
-		data, err := msg.GetAudioData(a.Session)
-		if err != nil {
-			logger.Warnf("unable to read data from message: %s", err)
-			return nil, err
-		}
-		xMSG, err := a.FileToXMPP(msg.Sender().String(), msg.ID(), "mp3", data)
-		if err != nil {
-			logger.Warnf("unable to create data from message: %s", err)
-			return nil, err
-		}
-		xMSG.Type = "chat"
-		requestExtensions(&xMSG)
-		logger.WithField("url", xMSG.Body).Debug("send audio")
-		return xMSG, nil
-
-	case o3.ImageMessage:
-		if a.threema.httpUploadPath == "" {
-			return nil, errors.New("no place to store files at transport configurated")
-		}
-		data, err := msg.GetImageData(a.Session)
-		if err != nil {
-			logger.Warnf("unable to read data from message: %s", err)
-			return nil, err
-		}
-		xMSG, err := a.FileToXMPP(msg.Sender().String(), msg.ID(), "jpg", data)
-		if err != nil {
-			logger.Warnf("unable to create data from message: %s", err)
-			return nil, err
-		}
-		xMSG.Type = "chat"
-		requestExtensions(&xMSG)
-		logger.WithField("url", xMSG.Body).Debug("send image")
-		return xMSG, nil
-
+		case o3.ImageMessage:
+			if a.threema.httpUploadPath == "" {
+				return nil, errors.New("no place to store files at transport configurated")
+			}
+			data, err := msg.GetImageData(a.Session)
+			if err != nil {
+				logger.Warnf("unable to read data from message: %s", err)
+				return nil, err
+			}
+			xMSG, err := a.FileToXMPP(sender.String(), header.ID, "jpg", data)
+			if err != nil {
+				logger.Warnf("unable to create data from message: %s", err)
+				return nil, err
+			}
+			xMSG.Type = "chat"
+			requestExtensions(&xMSG)
+			logger.WithField("url", xMSG.Body).Debug("send image")
+			return xMSG, nil
+	*/
 	case o3.DeliveryReceiptMessage:
-		msgID := msg.MsgID()
-		xMSG := stanza.NewMessage(stanza.Attrs{Type: stanza.MessageTypeChat, From: msg.Sender().String(), To: a.XMPP.String()})
+		xMSG := stanza.NewMessage(stanza.Attrs{Type: stanza.MessageTypeChat, From: sender, To: a.XMPP.String()})
 		state := ""
 
-		if msg.Status() == o3.MSGDELIVERED {
+		if msg.Status == o3.MSGDELIVERED {
 			state = "delivered"
-			if id, ok := a.deliveredMSG[msgID]; ok {
+			if id, ok := a.deliveredMSG[msg.MessageID]; ok {
 				xMSG.Extensions = append(xMSG.Extensions, stanza.ReceiptReceived{ID: id})
 				xMSG.Extensions = append(xMSG.Extensions, stanza.MarkReceived{ID: id})
-				delete(a.deliveredMSG, msgID)
+				delete(a.deliveredMSG, msg.MessageID)
 			} else {
 				logger.Warnf("found not id in cache to announce received on xmpp side")
 			}
 		}
-		if msg.Status() == o3.MSGREAD {
+		if msg.Status == o3.MSGREAD {
 			state = "displayed"
-			if id, ok := a.readedMSG[msgID]; ok {
+			if id, ok := a.readedMSG[msg.MessageID]; ok {
 				xMSG.Extensions = append(xMSG.Extensions, stanza.MarkDisplayed{ID: id})
-				delete(a.readedMSG, msgID)
+				delete(a.readedMSG, msg.MessageID)
 			} else {
 				logger.Warnf("found not id in cache to announce readed on xmpp side")
 			}
@@ -122,7 +123,7 @@ func (a *Account) receiving(receivedMessage o3.Message) (stanza.Packet, error) {
 		}
 		return nil, nil
 	case o3.TypingNotificationMessage:
-		xMSG := stanza.NewMessage(stanza.Attrs{Type: stanza.MessageTypeChat, From: msg.Sender().String(), To: a.XMPP.String(), Id: strconv.FormatUint(msg.ID(), 10)})
+		xMSG := stanza.NewMessage(stanza.Attrs{Type: stanza.MessageTypeChat, From: sender, To: a.XMPP.String(), Id: strconv.FormatUint(header.ID, 10)})
 		if msg.OnOff != 0 {
 			logger.Debug("composing")
 			xMSG.Extensions = append(xMSG.Extensions, stanza.StateComposing{})
diff --git a/component/threema/receive_test.go b/component/threema/receive_test.go
index 9800dea..5331062 100644
--- a/component/threema/receive_test.go
+++ b/component/threema/receive_test.go
@@ -8,12 +8,12 @@ import (
 	"gosrc.io/xmpp/stanza"
 )
 
-const threemaID = "87654321"
+const threemaFromID = "87654321"
 
-var threemaIDByte o3.IDString
+var threemaFromIDByte o3.IDString
 
 func init() {
-	threemaIDByte = o3.NewIDString(threemaID)
+	threemaFromIDByte = o3.NewIDString(threemaFromID)
 }
 
 func createDummyAccount() Account {
@@ -21,8 +21,8 @@ func createDummyAccount() Account {
 		deliveredMSG: make(map[uint64]string),
 		readedMSG:    make(map[uint64]string),
 	}
-	a.TID = make([]byte, len(threemaIDByte))
-	copy(a.TID, threemaIDByte[:])
+	a.TID = make([]byte, len(threemaFromIDByte))
+	copy(a.TID, threemaFromIDByte[:])
 
 	return a
 }
@@ -45,35 +45,33 @@ func TestReceiveText(t *testing.T) {
 	a := createDummyAccount()
 
 	// receiving text
-	session := o3.SessionContext{
-		ID: o3.ThreemaID{
-			ID:   o3.NewIDString("12345678"),
-			Nick: o3.NewPubNick("user"),
+	txtMsg := o3.TextMessage{
+		MessageHeader: &o3.MessageHeader{
+			Sender:    threemaFromIDByte,
+			Recipient: o3.NewIDString("12345678"),
 		},
+		Body: "Oojoh0Ah",
 	}
-	txtMsg, err := o3.NewTextMessage(&session, threemaID, "Oojoh0Ah")
-	assert.NoError(err)
 	p, err := a.receiving(txtMsg)
 	assert.NoError(err)
+	assert.NotNil(p)
 	xMSG, ok := p.(stanza.Message)
 	assert.True(ok)
 	assert.Equal("Oojoh0Ah", xMSG.Body)
 }
 
+/*
 func TestReceiveAudio(t *testing.T) {
 	assert := assert.New(t)
 
 	a := createDummyAccount()
 	a.threema = &Threema{}
 
-	/* receiving image
-	session := o3.SessionContext{
-		ID: o3.ThreemaID{
-			ID:   o3.NewIDString("12345678"),
-			Nick: o3.NewPubNick("user"),
+	dataMsg := o3.ImageMessage{
+		MessageHeader: &o3.MessageHeader{
+			Sender: threemaFromIDByte,
 		},
-	}*/
-	dataMsg := o3.AudioMessage{}
+	}
 	_, err := a.receiving(dataMsg)
 	assert.Error(err)
 
@@ -88,22 +86,26 @@ func TestReceiveImage(t *testing.T) {
 	a := createDummyAccount()
 	a.threema = &Threema{}
 
-	/* receiving image
-	session := o3.SessionContext{
-		ID: o3.ThreemaID{
-			ID:   o3.NewIDString("12345678"),
-			Nick: o3.NewPubNick("user"),
+	// receiving image
+	dataMsg := o3.ImageMessage{
+		MessageHeader: &o3.MessageHeader{
+			Sender: threemaFromIDByte,
 		},
-	}*/
-	imgMsg := o3.ImageMessage{}
-	_, err := a.receiving(imgMsg)
+	}
+	_, err := a.receiving(dataMsg)
 	assert.Error(err)
 
 	a.threema.httpUploadPath = "/tmp"
-	imgMsg = o3.ImageMessage{}
-	_, err = a.receiving(imgMsg)
+	dataMsg := o3.ImageMessage{
+		MessageHeader: &o3.MessageHeader{
+			Sender: threemaFromIDByte,
+		},
+	}
+	dataMsg = o3.ImageMessage{}
+	_, err = a.receiving(dataMsg)
 	assert.Error(err)
 }
+*/
 
 func TestReceiveDeliveryReceipt(t *testing.T) {
 	assert := assert.New(t)
@@ -111,20 +113,20 @@ func TestReceiveDeliveryReceipt(t *testing.T) {
 	a := createDummyAccount()
 
 	// receiving delivered
-	session := o3.SessionContext{
-		ID: o3.ThreemaID{
-			ID:   o3.NewIDString("12345678"),
-			Nick: o3.NewPubNick("user"),
-		},
-	}
 	msgID := o3.NewMsgID()
 	a.deliveredMSG[msgID] = "im4aeseeh1IbaQui"
 	a.readedMSG[msgID] = "im4aeseeh1IbaQui"
 
-	drm, err := o3.NewDeliveryReceiptMessage(&session, threemaID, msgID, o3.MSGDELIVERED)
-	assert.NoError(err)
+	drm := o3.DeliveryReceiptMessage{
+		MessageHeader: &o3.MessageHeader{
+			Sender: threemaFromIDByte,
+		},
+		Status:    o3.MSGDELIVERED,
+		MessageID: msgID,
+	}
 	p, err := a.receiving(drm)
 	assert.NoError(err)
+	assert.NotNil(p)
 	xMSG, ok := p.(stanza.Message)
 	assert.True(ok)
 	rr := xMSG.Extensions[0].(stanza.ReceiptReceived)
@@ -136,10 +138,16 @@ func TestReceiveDeliveryReceipt(t *testing.T) {
 	assert.Nil(p)
 
 	// receiving readed
-	drm, err = o3.NewDeliveryReceiptMessage(&session, threemaID, msgID, o3.MSGREAD)
-	assert.NoError(err)
+	drm = o3.DeliveryReceiptMessage{
+		MessageHeader: &o3.MessageHeader{
+			Sender: threemaFromIDByte,
+		},
+		MessageID: msgID,
+		Status:    o3.MSGREAD,
+	}
 	p, err = a.receiving(drm)
 	assert.NoError(err)
+	assert.NotNil(p)
 	xMSG, ok = p.(stanza.Message)
 	assert.True(ok)
 	cmdd := xMSG.Extensions[0].(stanza.MarkDisplayed)
@@ -156,17 +164,27 @@ func TestReceiveTyping(t *testing.T) {
 	a := createDummyAccount()
 
 	// receiving inactive
-	tnm := o3.TypingNotificationMessage{}
+	tnm := o3.TypingNotificationMessage{
+		MessageHeader: &o3.MessageHeader{
+			Sender: threemaFromIDByte,
+		},
+	}
 	p, err := a.receiving(tnm)
+	assert.NotNil(p)
 	assert.NoError(err)
 	xMSG, ok := p.(stanza.Message)
 	assert.True(ok)
 	assert.IsType(stanza.StateInactive{}, xMSG.Extensions[0])
 
 	// receiving composing
-	tnm = o3.TypingNotificationMessage{}
-	tnm.OnOff = 0x1
+	tnm = o3.TypingNotificationMessage{
+		MessageHeader: &o3.MessageHeader{
+			Sender: threemaFromIDByte,
+		},
+		OnOff: 0x1,
+	}
 	p, err = a.receiving(tnm)
+	assert.NotNil(p)
 	assert.NoError(err)
 	xMSG, ok = p.(stanza.Message)
 	assert.True(ok)
diff --git a/component/threema/send.go b/component/threema/send.go
index efcaf22..fb9fede 100644
--- a/component/threema/send.go
+++ b/component/threema/send.go
@@ -23,6 +23,8 @@ func (a *Account) sending(to string, msg stanza.Message) (o3.Message, error) {
 		"from": a.XMPP.String(),
 		"to":   to,
 	})
+	msg3To := o3.NewIDString(to)
+	msg3From := o3.NewIDString(string(a.AccountThreema.TID))
 
 	chatState := false
 	chatStateComposing := false
@@ -61,22 +63,29 @@ func (a *Account) sending(to string, msg stanza.Message) (o3.Message, error) {
 			if err != nil {
 				return nil, err
 			}
-			msgType := o3.MSGDELIVERED
-			if msgStateRead {
-				msgType = o3.MSGREAD
+			drm := o3.DeliveryReceiptMessage{
+				MessageHeader: &o3.MessageHeader{
+					Sender:    msg3From,
+					ID:        id,
+					Recipient: msg3To,
+				},
+				Status: o3.MSGDELIVERED,
 			}
-			drm, err := o3.NewDeliveryReceiptMessage(&a.Session, to, id, msgType)
-			if err != nil {
-				return nil, err
+			if msgStateRead {
+				drm.Status = o3.MSGREAD
 			}
 			logger.WithFields(map[string]interface{}{
 				"msg_id": id,
-				"type":   msgType,
+				"type":   drm.Status,
 			}).Debug("update status of threema message")
 			return drm, nil
 		}
 		if chatState {
-			tnm := o3.TypingNotificationMessage{}
+			tnm := o3.TypingNotificationMessage{
+				MessageHeader: &o3.MessageHeader{
+					Sender: o3.NewIDString(string(a.AccountThreema.TID)),
+				},
+			}
 			if chatStateComposing {
 				tnm.OnOff = 0x1
 			}
@@ -86,17 +95,22 @@ func (a *Account) sending(to string, msg stanza.Message) (o3.Message, error) {
 			return nil, nil
 		}
 	}
+	msg3ID := o3.NewMsgID()
 
 	// send text message
-	msg3, err := o3.NewTextMessage(&a.Session, to, msg.Body)
-	if err != nil {
-		return nil, err
+	msg3 := o3.TextMessage{
+		MessageHeader: &o3.MessageHeader{
+			Sender:    o3.NewIDString(string(a.AccountThreema.TID)),
+			ID:        msg3ID,
+			Recipient: msg3To,
+		},
+		Body: msg.Body,
 	}
-	a.deliveredMSG[msg3.ID()] = msg.Id
-	a.readedMSG[msg3.ID()] = msg.Id
+	a.deliveredMSG[msg3ID] = msg.Id
+	a.readedMSG[msg3ID] = msg.Id
 	logger.WithFields(map[string]interface{}{
 		"x_id": msg.Id,
-		"t_id": msg3.ID(),
+		"t_id": msg3ID,
 		"text": msg.Body,
 	}).Debug("send text")
 	return msg3, nil
diff --git a/component/threema/send_test.go b/component/threema/send_test.go
index f742acc..994b1e6 100644
--- a/component/threema/send_test.go
+++ b/component/threema/send_test.go
@@ -28,7 +28,7 @@ func TestAccountSend(t *testing.T) {
 	p := <-send
 	assert.NotNil(p)
 	msg := p.(o3.TextMessage)
-	assert.Contains(msg.Text(), "ohz8kai0ohNgohth")
+	assert.Contains(msg.Body, "ohz8kai0ohNgohth")
 
 	// test error
 	err := a.Send("a", stanza.Message{
@@ -67,7 +67,7 @@ func TestAccountSendingDeliviery(t *testing.T) {
 	assert.NoError(err)
 	drm, ok := msg.(o3.DeliveryReceiptMessage)
 	assert.True(ok)
-	assert.Equal(o3.MSGDELIVERED, drm.Status())
+	assert.Equal(o3.MSGDELIVERED, drm.Status)
 
 	// test read
 	msg, err = a.sending("a", stanza.Message{
@@ -79,7 +79,7 @@ func TestAccountSendingDeliviery(t *testing.T) {
 	assert.NoError(err)
 	drm, ok = msg.(o3.DeliveryReceiptMessage)
 	assert.True(ok)
-	assert.Equal(o3.MSGREAD, drm.Status())
+	assert.Equal(o3.MSGREAD, drm.Status)
 }
 func TestSendTyping(t *testing.T) {
 	assert := assert.New(t)
@@ -128,5 +128,5 @@ func TestSendTyping(t *testing.T) {
 	assert.NoError(err)
 	assert.NotNil(msg)
 	o3msg := msg.(o3.TextMessage)
-	assert.Contains(o3msg.Text(), "hi")
+	assert.Contains(o3msg.Body, "hi")
 }
diff --git a/vendor/github.com/o3ma/o3 b/vendor/github.com/o3ma/o3
index 16684c5..0c0e149 160000
--- a/vendor/github.com/o3ma/o3
+++ b/vendor/github.com/o3ma/o3
@@ -1 +1 @@
-Subproject commit 16684c5acfd9abe4d27d52478c7a6c6d5113d29c
+Subproject commit 0c0e14982ac6e2886901faef423ed731911b3b39