diff --git a/services/web/server/src/simcore_service_webserver/conversations/_conversation_message_service.py b/services/web/server/src/simcore_service_webserver/conversations/_conversation_message_service.py
index 66576e9416b..caeec8b030c 100644
--- a/services/web/server/src/simcore_service_webserver/conversations/_conversation_message_service.py
+++ b/services/web/server/src/simcore_service_webserver/conversations/_conversation_message_service.py
@@ -111,6 +111,7 @@ async def update_message(
 async def delete_message(
     app: web.Application,
     *,
+    user_id: UserID,
     project_id: ProjectID,
     conversation_id: ConversationID,
     message_id: ConversationMessageID,
@@ -121,9 +122,12 @@ async def delete_message(
         message_id=message_id,
     )
 
+    _user_group_id = await get_user_primary_group_id(app, user_id=user_id)
+
     await notify_conversation_message_deleted(
         app,
         recipients=await _get_recipients(app, project_id),
+        user_group_id=_user_group_id,
         project_id=project_id,
         conversation_id=conversation_id,
         message_id=message_id,
diff --git a/services/web/server/src/simcore_service_webserver/conversations/_socketio.py b/services/web/server/src/simcore_service_webserver/conversations/_socketio.py
index bd919c19fc0..03761ca4961 100644
--- a/services/web/server/src/simcore_service_webserver/conversations/_socketio.py
+++ b/services/web/server/src/simcore_service_webserver/conversations/_socketio.py
@@ -6,7 +6,9 @@
     ConversationID,
     ConversationMessageGetDB,
     ConversationMessageID,
+    ConversationMessageType,
 )
+from models_library.groups import GroupID
 from models_library.projects import ProjectID
 from models_library.socketio import SocketMessageDict
 from models_library.users import UserID
@@ -14,7 +16,7 @@
 from pydantic.alias_generators import to_camel
 from servicelib.utils import limited_as_completed
 
-from ..socketio.messages import send_message_to_standard_group
+from ..socketio.messages import send_message_to_user
 
 _MAX_CONCURRENT_SENDS: Final[int] = 3
 
@@ -32,6 +34,8 @@
 class BaseConversationMessage(BaseModel):
     conversation_id: ConversationID
     message_id: ConversationMessageID
+    user_group_id: GroupID
+    type: ConversationMessageType
 
     model_config = ConfigDict(
         populate_by_name=True,
@@ -42,13 +46,9 @@ class BaseConversationMessage(BaseModel):
     )
 
 
-class ConversationMessageCreated(BaseConversationMessage):
+class ConversationMessageCreatedOrUpdated(BaseConversationMessage):
     content: str
     created: datetime.datetime
-
-
-class ConversationMessageUpdated(BaseConversationMessage):
-    content: str
     modified: datetime.datetime
 
 
@@ -62,7 +62,9 @@ async def _send_message_to_recipients(
 ):
     async for _ in limited_as_completed(
         (
-            send_message_to_standard_group(app, recipient, notification_message)
+            send_message_to_user(
+                app, recipient, notification_message, ignore_queue=True
+            )
             for recipient in recipients
         ),
         limit=_MAX_CONCURRENT_SENDS,
@@ -81,7 +83,7 @@ async def notify_conversation_message_created(
         event_type=SOCKET_IO_CONVERSATION_MESSAGE_CREATED_EVENT,
         data={
             "projectId": project_id,
-            **ConversationMessageCreated(
+            **ConversationMessageCreatedOrUpdated(
                 **conversation_message.model_dump()
             ).model_dump(mode="json", by_alias=True),
         },
@@ -102,7 +104,7 @@ async def notify_conversation_message_updated(
         event_type=SOCKET_IO_CONVERSATION_MESSAGE_UPDATED_EVENT,
         data={
             "projectId": project_id,
-            **ConversationMessageUpdated(
+            **ConversationMessageCreatedOrUpdated(
                 **conversation_message.model_dump()
             ).model_dump(mode="json", by_alias=True),
         },
@@ -115,6 +117,7 @@ async def notify_conversation_message_deleted(
     app: web.Application,
     *,
     recipients: set[UserID],
+    user_group_id: GroupID,
     project_id: ProjectID,
     conversation_id: ConversationID,
     message_id: ConversationMessageID,
@@ -125,7 +128,10 @@ async def notify_conversation_message_deleted(
         data={
             "projectId": project_id,
             **ConversationMessageDeleted(
-                conversation_id=conversation_id, message_id=message_id
+                conversation_id=conversation_id,
+                message_id=message_id,
+                user_group_id=user_group_id,
+                type=ConversationMessageType.MESSAGE,
             ).model_dump(mode="json", by_alias=True),
         },
     )
diff --git a/services/web/server/src/simcore_service_webserver/projects/_conversations_service.py b/services/web/server/src/simcore_service_webserver/projects/_conversations_service.py
index a28cec56ad9..b415f694bcf 100644
--- a/services/web/server/src/simcore_service_webserver/projects/_conversations_service.py
+++ b/services/web/server/src/simcore_service_webserver/projects/_conversations_service.py
@@ -247,6 +247,7 @@ async def delete_project_conversation_message(
     )
     await conversations_service.delete_message(
         app,
+        user_id=user_id,
         project_id=project_uuid,
         conversation_id=conversation_id,
         message_id=message_id,