def METHOD_NAME(self, follow_up=False):
    prev_month = self.previous_month_date.astimezone(
        pytz.timezone(self.event.timezone)
    ).strftime(
        "%b %Y"
    )  # Displayed as Aug 2016
    app_name = get_settings()['app_name']
    frontend_url = get_settings()['frontend_url']
    link = f'{frontend_url}/event-invoice/{self.identifier}/review'
    currency = self.event.payment_currency
    amount = f"{currency} {self.amount:.2f}"
    send_email_for_monthly_fee_payment(
        self.user,
        self.event.name,
        prev_month,
        amount,
        app_name,
        link,
        follow_up=follow_up,
    )
    if isinstance(follow_up, bool):
        notify_monthly_payment(self, follow_up)