diff --git a/services/web/server/src/simcore_service_webserver/conversations/_controller/_conversations_messages_rest.py b/services/web/server/src/simcore_service_webserver/conversations/_controller/_conversations_messages_rest.py
index 56440e5c24e0..5a774c584dd3 100644
--- a/services/web/server/src/simcore_service_webserver/conversations/_controller/_conversations_messages_rest.py
+++ b/services/web/server/src/simcore_service_webserver/conversations/_controller/_conversations_messages_rest.py
@@ -117,10 +117,7 @@ async def create_conversation_message(request: web.Request):
                 request, template_name
             )
             _url = request.url
-            if _url.port:
-                _conversation_url = f"{_url.scheme}://{_url.host}:{_url.port}/#/conversations/{path_params.conversation_id}"
-            else:
-                _conversation_url = f"{_url.scheme}://{_url.host}/#/conversations/{path_params.conversation_id}"
+            _conversation_url = f"{_url.scheme}://{_url.host}/#/conversation/{path_params.conversation_id}"
             _extra_context = _conversation.extra_context
             await email_service.send_email_from_template(
                 request,
diff --git a/services/web/server/src/simcore_service_webserver/groups/_groups_repository.py b/services/web/server/src/simcore_service_webserver/groups/_groups_repository.py
index 8c04d62b2d33..05bed6c18d68 100644
--- a/services/web/server/src/simcore_service_webserver/groups/_groups_repository.py
+++ b/services/web/server/src/simcore_service_webserver/groups/_groups_repository.py
@@ -550,12 +550,16 @@ async def list_users_in_group(
 
         # Get all users in the group
         query = (
-            sa.select(*_GROUP_COLUMNS)
-            .select_from(
-                groups.join(
-                    user_to_groups, user_to_groups.c.gid == groups.c.gid, isouter=True
-                ).join(users, users.c.id == user_to_groups.c.uid)
+            sa.select(
+                users.c.id,
+                users.c.name,
+                users.c.email,
+                users.c.first_name,
+                users.c.last_name,
+                users.c.primary_gid,
+                # user_to_groups.c.access_rights,  # <-- currently not neccessary, might be added if needed
             )
+            .select_from(users.join(user_to_groups, users.c.id == user_to_groups.c.uid))
             .where(user_to_groups.c.gid == group_id)
         )
 
diff --git a/services/web/server/tests/unit/with_dbs/01/groups/test_groups_repository.py b/services/web/server/tests/unit/with_dbs/01/groups/test_groups_repository.py
new file mode 100644
index 000000000000..91f1aa485116
--- /dev/null
+++ b/services/web/server/tests/unit/with_dbs/01/groups/test_groups_repository.py
@@ -0,0 +1,74 @@
+# pylint: disable=redefined-outer-name
+# pylint: disable=too-many-arguments
+# pylint: disable=unused-argument
+# pylint: disable=unused-variable
+
+from collections.abc import AsyncGenerator, Callable, Coroutine
+from typing import Any
+
+import pytest
+from aiohttp.test_utils import TestClient
+from models_library.groups import GroupMember, StandardGroupCreate
+from pytest_simcore.helpers.webserver_users import UserInfoDict
+from simcore_postgres_database.models.users import UserRole
+from simcore_service_webserver.groups import _groups_repository
+
+
+@pytest.fixture
+async def create_test_group(
+    client: TestClient, logged_user: UserInfoDict
+) -> AsyncGenerator[Callable[..., Coroutine[Any, Any, Any]], None]:
+    """Fixture that creates a standard group and ensures cleanup."""
+    created_groups = []
+
+    async def _create_group(
+        name: str = "Test Group",
+        description: str = "A test group",
+        thumbnail: str | None = None,
+    ):
+        group, _ = await _groups_repository.create_standard_group(
+            app=client.app,
+            user_id=logged_user["id"],
+            create=StandardGroupCreate(
+                name=name,
+                description=description,
+                thumbnail=thumbnail,
+            ),
+        )
+        created_groups.append(group)
+        return group
+
+    yield _create_group
+
+    # Cleanup all created groups
+    for group in created_groups:
+        await _groups_repository.delete_standard_group(
+            app=client.app, user_id=logged_user["id"], group_id=group.gid
+        )
+
+
+@pytest.mark.parametrize("user_role", [UserRole.USER])
+async def test_list_users_in_group_owner_only(
+    client: TestClient,
+    user_role: UserRole,
+    logged_user: UserInfoDict,
+    create_test_group: Callable[..., Coroutine[Any, Any, Any]],
+):
+    """Test list_users_in_group returns only the owner for a new group."""
+    assert client.app
+
+    # Create a standard group
+    group = await create_test_group(
+        name="Test Owner Only Group",
+        description="A test group to check owner-only user list",
+    )
+
+    # List users in the group - should only contain the owner
+    users_in_group = await _groups_repository.list_users_in_group(
+        app=client.app, group_id=group.gid
+    )
+
+    # Should contain exactly one user (the owner)
+    assert len(users_in_group) == 1
+    assert isinstance(users_in_group[0], GroupMember)
+    assert users_in_group[0].id == logged_user["id"]