diff --git a/examples/pingpong.nim b/examples/pingpong.nim
index 723ef7e..4625d3d 100644
--- a/examples/pingpong.nim
+++ b/examples/pingpong.nim
@@ -36,7 +36,7 @@ proc main() {.async.} =
 
   var ri = 0
   # Wire Callbacks
-  saro.onNewMessage(proc(convo: Conversation, msg: ContentFrame) {.async.} =
+  saro.onNewMessage(proc(convo: Conversation, msgInfo: MessageInfo, msg: ContentFrame) {.async.} =
     echo "    Saro  <------        :: " & getContent(msg)
     await sleepAsync(5000)
     discard await convo.sendMessage(saro.ds, initTextFrame("Ping").toContentFrame())
@@ -50,8 +50,8 @@ proc main() {.async.} =
 
 
 
-  raya.onNewMessage(proc(convo: Conversation, msg: ContentFrame) {.async.} =
-    echo "           ------>  Raya :: " & getContent(msg)
+  raya.onNewMessage(proc(convo: Conversation, msgInfo: MessageInfo, msg: ContentFrame) {.async.} =
+    echo fmt"           ------>  Raya :: from:{msgInfo.sender.value} " & getContent(msg)
     await sleepAsync(500)
     discard  await convo.sendMessage(raya.ds, initTextFrame("Pong" & $ri).toContentFrame())
     await sleepAsync(800)
diff --git a/src/chat_sdk.nim b/src/chat_sdk.nim
index 957117e..c3f32f7 100644
--- a/src/chat_sdk.nim
+++ b/src/chat_sdk.nim
@@ -4,12 +4,12 @@ import chat_sdk/[
   delivery/waku_client,
   identity,
   links,
+  message_info,
   proto_types,
   types
-
 ]
 
-export client, conversations, waku_client, identity, links
+export client, conversations, identity, links, message_info, waku_client
 
 #export specific frames need by applications
 export ContentFrame, MessageId
diff --git a/src/chat_sdk/client.nim b/src/chat_sdk/client.nim
index 6d53c4d..e45806e 100644
--- a/src/chat_sdk/client.nim
+++ b/src/chat_sdk/client.nim
@@ -24,6 +24,7 @@ import #local
   errors,
   identity,
   inbox,
+  message_info,
   proto_types,
   types,
   utils
@@ -37,7 +38,7 @@ logScope:
 #################################################
 
 type
-  MessageCallback*[T] = proc(conversation: Conversation, msg: T): Future[void] {.async.}
+  MessageCallback* = proc(conversation: Conversation, msgInfo: MessageInfo, msg: ContentFrame): Future[void] {.async.}
   NewConvoCallback* = proc(conversation: Conversation): Future[void] {.async.}
   DeliveryAckCallback* = proc(conversation: Conversation,
       msgId: MessageId): Future[void] {.async.}
@@ -56,7 +57,7 @@ type Client* = ref object
   inboundQueue: QueueRef
   isRunning: bool
 
-  newMessageCallbacks: seq[MessageCallback[ContentFrame]]
+  newMessageCallbacks: seq[MessageCallback]
   newConvoCallbacks: seq[NewConvoCallback]
   deliveryAckCallbacks: seq[DeliveryAckCallback]
 
@@ -122,13 +123,13 @@ proc listConversations*(client: Client): seq[Conversation] =
 # Callback Handling
 #################################################
 
-proc onNewMessage*(client: Client, callback: MessageCallback[ContentFrame]) =
+proc onNewMessage*(client: Client, callback: MessageCallback) =
   client.newMessageCallbacks.add(callback)
 
-proc notifyNewMessage(client: Client, convo: Conversation,
+proc notifyNewMessage*(client: Client,  convo: Conversation, msgInfo: MessageInfo,
     content: ContentFrame) =
   for cb in client.newMessageCallbacks:
-    discard cb(convo, content)
+    discard cb(convo, msgInfo, content)
 
 proc onNewConversation*(client: Client, callback: NewConvoCallback) =
   client.newConvoCallbacks.add(callback)
diff --git a/src/chat_sdk/conversation_store.nim b/src/chat_sdk/conversation_store.nim
index ce89a0a..70d2543 100644
--- a/src/chat_sdk/conversation_store.nim
+++ b/src/chat_sdk/conversation_store.nim
@@ -5,6 +5,7 @@ import crypto
 import identity
 import proto_types
 import types
+import message_info
 
 type ConvoId = string
 
@@ -15,7 +16,7 @@ type
     proc identity(self: Self): Identity
     proc getId(self: Self): string
 
-    proc notifyNewMessage(self: Self, convo: Conversation,
+    proc notifyNewMessage(self: Self, convo: Conversation, msgInfo: MessageInfo,
         content: ContentFrame)
     proc notifyDeliveryAck(self: Self, convo: Conversation,
         msgId: MessageId)
diff --git a/src/chat_sdk/conversations/private_v1.nim b/src/chat_sdk/conversations/private_v1.nim
index f0d6615..8605ff3 100644
--- a/src/chat_sdk/conversations/private_v1.nim
+++ b/src/chat_sdk/conversations/private_v1.nim
@@ -20,6 +20,7 @@ import ../[
   utils
 ]
 import convo_type
+import ../message_info
 
 import ../../naxolotl as nax
  
@@ -202,7 +203,7 @@ proc handleFrame*[T: ConversationStore](convo: PrivateV1, client: T,
   case frame.getKind():
   of typeContentFrame:
     # TODO: Using client.getId() results in an error in this context
-    client.notifyNewMessage(convo, frame.content)
+    client.notifyNewMessage(convo, MessageInfo(sender: Property[PublicKey](value: convo.participant, verifiability: Unverified)), frame.content)
 
   of typePlaceholder:
     notice "Got Placeholder", text = frame.placeholder.counter
diff --git a/src/chat_sdk/message_info.nim b/src/chat_sdk/message_info.nim
new file mode 100644
index 0000000..af6bead
--- /dev/null
+++ b/src/chat_sdk/message_info.nim
@@ -0,0 +1,13 @@
+import crypto
+
+type
+  VerifabilityProp* = enum
+    Verified, Unverified
+
+type Property*[T] = object
+  value*: T
+  verifiability*: VerifabilityProp
+
+type MessageInfo* = object
+  sender*: Property[PublicKey]
+  timestamp*: Property[uint64]
\ No newline at end of file