def METHOD_NAME(request, username, id_string):
    """Retrieve and process submission from SMSSync Request"""
    sms_event = request.POST.get("event", "").strip()
    if not sms_event == "mo_sms":
        return HttpResponse()
    sms_identity = request.POST.get("phone", "").strip()
    sms_relayer = request.POST.get("relayer", "").strip()
    sms_text = request.POST.get("text", "").strip()
    now_time = datetime.datetime.now().isoformat()
    sent_time = request.POST.get("time", now_time).strip()
    try:
        sms_time = dateutil.parser.parse(sent_time)
    except ValueError:
        sms_time = datetime.datetime.now()
    return process_message_for_textit(
        username=username,
        sms_identity=sms_identity,
        sms_text=sms_text,
        sms_time=sms_time,
        id_string=id_string,
        payload={"phone": sms_identity, "relayer": sms_relayer},
    )