diff --git a/examples/tui/tui.nim b/examples/tui/tui.nim
index 15adfa7..9ce55c4 100644
--- a/examples/tui/tui.nim
+++ b/examples/tui/tui.nim
@@ -35,6 +35,8 @@ type
     sender: string
     content: string
     timestamp: DateTime
+    id: string
+    isAcknowledged: bool
 
   ConvoInfo = object
     name: string
@@ -71,13 +73,15 @@ proc `==`(a,b: ConvoInfo):bool =
 # Data Management
 #################################################
 
-proc addMessage(conv: var ConvoInfo, sender: string, content: string) =
+proc addMessage(conv: var ConvoInfo, messageId: MessageId, sender: string, content: string) =
 
   let now = now()
   conv.messages.add(Message(
     sender: sender,
+    id: messageId,
     content: content,
-    timestamp: now
+    timestamp: now,
+    isAcknowledged: false
   ))
   conv.lastMsgTime = now
 
@@ -117,10 +121,13 @@ proc createConvo(app: ChatApp) {.async.} =
   discard await app.client.newPrivateConversation(toBundle(app.inputInviteBuffer.strip()).get())
 
 proc sendMessage(app: ChatApp, convoInfo: ptr ConvoInfo, msg: string) {.async.} = 
-  convoInfo[].addMessage("You", app.inputBuffer)
 
+  var msgId = ""
   if convoInfo.convo != nil:
-    await convoInfo.convo.sendMessage(app.client.ds, initTextFrame(msg).toContentFrame())
+    msgId = await convoInfo.convo.sendMessage(app.client.ds, initTextFrame(msg).toContentFrame())
+
+  convoInfo[].addMessage(msgId, "You", app.inputBuffer)
+
 
 proc setupChatSdk(app: ChatApp) =
 
@@ -149,6 +156,16 @@ proc setupChatSdk(app: ChatApp) =
   app.client.onDeliveryAck(proc(convo: Conversation, msgId: string) {.async.} =
     info "DeliveryAck", msgId=msgId
     app.logMsgs.add(LogEntry(level: "info",ts: now(), msg: fmt"Ack:{msgId}"))
+
+    var s = ""
+    var msgs = addr app.conversations[convo.id()].messages
+    for i in countdown(msgs[].high, 0):
+      s = fmt"{s},{msgs[i].id}"
+      var m = addr msgs[i]
+
+      if m.id == msgId:
+          m.isAcknowledged = true
+          break  # Stop after 
   )
 
 
@@ -265,11 +282,12 @@ proc drawMsgPane( app: ChatApp, layout: Pane) =
 
       let m = convo.messages[i]
       let timeStr = m.timestamp.format("HH:mm:ss")
-      
+      var deliveryIcon = " "
       var remainingText = m.content
       
       if m.sender == "You":
         tb.setForegroundColor(fgYellow)
+        deliveryIcon = if m.isAcknowledged: "✔" else: "◯"
       else:
         tb.setForegroundColor(fgGreen)
 
@@ -278,7 +296,7 @@ proc drawMsgPane( app: ChatApp, layout: Pane) =
           app.logMsgs.add(LogEntry(level: "info",ts: now(), msg: fmt" TOO LONG: {convo.name}"))
 
           return
-      tb.write(x, y, fmt"[{timeStr}] {m.sender}")
+      tb.write(x, y, fmt"[{timeStr}]  {deliveryIcon}  {m.sender}")
       y = y + 1
 
       while remainingText.len > 0:
@@ -300,11 +318,12 @@ proc drawMsgPane( app: ChatApp, layout: Pane) =
 
       let m = convo.messages[i]
       let timeStr = m.timestamp.format("HH:mm:ss")
-
+      var deliveryIcon = " "
       var remainingText = m.content
 
       if m.sender == "You":
         tb.setForegroundColor(fgYellow)
+        deliveryIcon = if m.isAcknowledged: "✔" else: "◯"
       else:
         tb.setForegroundColor(fgGreen)
 
@@ -322,7 +341,7 @@ proc drawMsgPane( app: ChatApp, layout: Pane) =
         tb.write(x+3, y, line)
         y = y - 1
       
-      tb.write(x, y, fmt"[{timeStr}] {m.sender}")
+      tb.write(x, y, fmt"[{timeStr}]  {deliveryIcon}  {m.sender}")
       y = y - 2
 
 proc drawMsgInput( app: ChatApp, layout: Pane) =
@@ -528,59 +547,10 @@ proc initChatApp(client: Client): Future[ChatApp] {.async.} =
 
 
   # Add some sample conversations with messages
-  var conv1 = ConvoInfo(name: "Alice", messages: @[])
-  conv1.addMessage("36Alice", "Hey there! How are you doing?")
-  conv1.addMessage("35You", "I'm doing well, thanks! Working on a new project.")
-  conv1.addMessage("34Alice", "That sounds exciting! What kind of project?")
-  conv1.addMessage("33You", "A terminal-based chat application in Nim!")
-  conv1.addMessage("32Alice", "Hey there! How are you doing?")
-  conv1.addMessage("31You", "I'm doing well, thanks! Working on a new project.")
-  conv1.addMessage("30Alice", "That sounds exciting! What kind of project?")
-  conv1.addMessage("29You", "A terminal-based chat application in Nim!")
-  conv1.addMessage("28Alice", "Hey there! How are you doing?")
-  conv1.addMessage("27You", "I'm doing well, thanks! Working on a new project.")
-  conv1.addMessage("26Alice", "That sounds exciting! What kind of project?")
-  conv1.addMessage("25You", "A terminal-based chat application in Nim! A terminal-based chat application in Nim! A terminal-based chat application in Nim! A terminal-based chat application in Nim! A terminal-based chat application in Nim! A terminal-based chat application in Nim! A terminal-based chat application in Nim! A terminal-based chat application in Nim! A terminal-based chat application in Nim! A terminal-based chat application in Nim!")
-  conv1.addMessage("24Alice", "Hey there! How are you doing?")
-  conv1.addMessage("23You", "I'm doing well, thanks! Working on a new project.")
-  conv1.addMessage("22Alice", "That sounds exciting! What kind of project?")
-  conv1.addMessage("21You", "A terminal-based chat application in Nim!")
-  conv1.addMessage("20Alice", "Hey there! How are you doing?")
-  conv1.addMessage("19You", "I'm doing well, thanks! Working on a new project.")
-  conv1.addMessage("18Alice", "That sounds exciting! What kind of project?")
-  conv1.addMessage("17You", "A terminal-based chat application in Nim!")
-  conv1.addMessage("16Alice", "Hey there! How are you doing?")
-  conv1.addMessage("15You", "I'm doing well, thanks! Working on a new project.")
-  conv1.addMessage("14Alice", "That sounds exciting! What kind of project?")
-  conv1.addMessage("13You", "A terminal-based chat application in Nim!")
-  conv1.addMessage("12Alice", "Hey there! How are you doing?")
-  conv1.addMessage("11You", "I'm doing well, thanks! Working on a new project.")
-  conv1.addMessage("10Alice", "That sounds exciting! What kind of project?")
-  conv1.addMessage("9You", "The system architecture consists of three main components: the client interface, the processing engine, and the data storage layer. Each component communicates through well-defined APIs that ensure scalability and maintainability. The client interface handles user interactions and validates input data before forwarding requests to the processing engine.")
-  conv1.addMessage("8Alice", "Hey there! How are you doing?")
-  conv1.addMessage("7You", "I'm doing well, thanks! Working on a new project.")
-  conv1.addMessage("6Alice", "That sounds exciting! What kind of project?")
-  conv1.addMessage("5You", "A terminal-based chat application in Nim!")
-  conv1.addMessage("4Alice", "Hey there! How are you doing?")
-  conv1.addMessage("3You", "I'm doing well, thanks! Working on a new project.")
-  conv1.addMessage("2Alice", "That sounds exciting! What kind of project?")
-  conv1.addMessage("1You", "A terminal-based chat application in Nim!")
+  var conv1 = ConvoInfo(name: "ReadMe", messages: @[])
+  conv1.addMessage("","Bob", "TODO")
   app.conversations[conv1.name] = conv1
 
-  var conv2 = ConvoInfo(name: "Bob", messages: @[])
-  conv2.addMessage("Bob", "Did you see the game last night?")
-  conv2.addMessage("You", "The system architecture consists of three main components: the client interface, the processing engine, and the data storage layer. Each component communicates through well-defined APIs that ensure scalability and maintainability. The client interface handles user interactions and validates input data before forwarding requests to the processing engine")
-  conv2.addMessage("Bob", "The home team crushed it! 3-0")
-  app.conversations[conv2.name] = conv2
-
-  var conv3 = ConvoInfo(name: "Development Team", messages: @[])
-  conv3.addMessage("Sarah", "Morning standup in 10 minutes")
-  conv3.addMessage("Mike", "I'll be there. Just finishing up the last bug fix.")
-  conv3.addMessage("You", "On my way!")
-  conv3.addMessage("Sarah", "Great! Let's review the sprint progress today.")
-  app.conversations[conv3.name] = conv3
-
-
   return app
 
 
diff --git a/src/chat_sdk.nim b/src/chat_sdk.nim
index 4d8ef69..957117e 100644
--- a/src/chat_sdk.nim
+++ b/src/chat_sdk.nim
@@ -4,11 +4,12 @@ import chat_sdk/[
   delivery/waku_client,
   identity,
   links,
-  proto_types
+  proto_types,
+  types
 
 ]
 
 export client, conversations, waku_client, identity, links
 
 #export specific frames need by applications
-export ContentFrame
+export ContentFrame, MessageId
diff --git a/src/chat_sdk/client.nim b/src/chat_sdk/client.nim
index c3b9fff..cf09226 100644
--- a/src/chat_sdk/client.nim
+++ b/src/chat_sdk/client.nim
@@ -231,8 +231,6 @@ proc newPrivateConversation*(client: Client,
 proc parseMessage(client: Client, msg: ChatPayload) {.raises: [ValueError,
     SerializationError].} =
   ## Receives a incoming payload, decodes it, and processes it.
-  info "Parse", clientId = client.getId(), msg = msg,
-      contentTopic = msg.contentTopic
 
   let envelope = decode(msg.bytes, WapEnvelopeV1).valueOr:
     raise newException(ValueError, "Failed to decode WapEnvelopeV1: " & error)
diff --git a/src/chat_sdk/conversations/convo_type.nim b/src/chat_sdk/conversations/convo_type.nim
index 66caf05..3be91c1 100644
--- a/src/chat_sdk/conversations/convo_type.nim
+++ b/src/chat_sdk/conversations/convo_type.nim
@@ -5,6 +5,7 @@ import strutils
 import ../proto_types
 import ../delivery/waku_client
 import ../utils
+import ../types
 
 type
   ConvoTypes* = enum
@@ -25,6 +26,6 @@ method id*(self: Conversation): string {.raises: [Defect, ValueError].} =
   panic("ProgramError: Missing concrete implementation")
 
 method sendMessage*(convo: Conversation, ds: WakuClient,
-    content_frame: ContentFrame) {.async, base, gcsafe.} =
+    content_frame: ContentFrame) : Future[MessageId] {.async, base, gcsafe.} =
   # TODO: make this a compile time check
   panic("ProgramError: Missing concrete implementation")
diff --git a/src/chat_sdk/conversations/private_v1.nim b/src/chat_sdk/conversations/private_v1.nim
index 00d2762..d64ce99 100644
--- a/src/chat_sdk/conversations/private_v1.nim
+++ b/src/chat_sdk/conversations/private_v1.nim
@@ -116,7 +116,7 @@ proc initPrivateV1*(owner: Identity, participant: PublicKey,
     raise newException(ValueError, "bad sds channel")
 
 proc sendFrame(self: PrivateV1, ds: WakuClient,
-    msg: PrivateV1Frame): Future[void]{.async.} =
+    msg: PrivateV1Frame):  Future[MessageId]{.async.} =
 
   let frameBytes = encode(msg)
   let msgId = self.calcMsgId(frameBytes)
@@ -130,6 +130,9 @@ proc sendFrame(self: PrivateV1, ds: WakuClient,
   discard ds.sendPayload(self.getTopic(), encryptedBytes.toEnvelope(
       self.getConvoId()))
 
+  result = msgId
+  
+
 method id*(self: PrivateV1): string =
   return getConvoIdRaw(self.participants, self.discriminator)
 
@@ -166,13 +169,13 @@ proc handleFrame*[T: ConversationStore](convo: PrivateV1, client: T,
 
 
 method sendMessage*(convo: PrivateV1, ds: WakuClient,
-    content_frame: ContentFrame) {.async.} =
+    content_frame: ContentFrame) : Future[MessageId] {.async.} =
 
   try:
     let frame = PrivateV1Frame(sender: @(convo.owner.getPubkey().bytes()),
         timestamp: getCurrentTimestamp(), content: content_frame)
 
-    await convo.sendFrame(ds, frame)
+    result = await convo.sendFrame(ds, frame)
   except Exception as e:
     error "Unknown error in PrivateV1:SendMessage"
 
diff --git a/src/chat_sdk/inbox.nim b/src/chat_sdk/inbox.nim
index fe933dc..d31dac5 100644
--- a/src/chat_sdk/inbox.nim
+++ b/src/chat_sdk/inbox.nim
@@ -11,6 +11,7 @@ import
   crypto,
   delivery/waku_client,
   proto_types,
+  types,
   utils
 
 logScope:
@@ -104,5 +105,6 @@ proc handleFrame*[T: ConversationStore](convo: Inbox, client: T, bytes: seq[
 
 
 method sendMessage*(convo: Inbox, ds: WakuClient,
-    content_frame: ContentFrame) {.async.} =
+    content_frame: ContentFrame) : Future[MessageId] {.async.} =
   warn "Cannot send message to Inbox"
+  result = "program_error"