I have this code which retrivies emails given an user email address

async def get_mails(self, *, address: str, days: int = 30) -> list[Message]:
    uuid = await self._get_uuid(address)
    if not uuid:
        return []

    end = datetime.now(timezone.utc) + timedelta(days=1)
    start = end - timedelta(days=days)
    query_params = MessagesRequestBuilder.MessagesRequestBuilderGetQueryParameters(
        filter=" ".join(
            f"""
            (receivedDateTime ge {start.strftime('%Y-%m-%dT%H:%M:%SZ')})
            and
            (receivedDateTime le {end.strftime("%Y-%m-%dT%H:%M:%SZ")})
        """.split()
        ),
        orderby=["receivedDateTime"],
        include_hidden_messages="true"
    )

    request_config = (
        MessagesRequestBuilder.MessagesRequestBuilderGetRequestConfiguration(
            query_parameters=query_params,
        )
    )

    result = await self.graph_client.users.by_user_id(uuid).messages.get(request_config)

    if not result or not result.value:
        return []

    return result.value

The problem is: I am not sure about the refresh rate, but new emails are not showing. I have tried external emails and internal ones, no one of them.

The flag include_hidden_messages is totally undocumented, there is nothing in the internet, is that parameter correct?