def send_mail_btn(service: str):
    serv = settings.get_service_by_name(service)

    if not serv:
        return []
    
    url = serv.get_endpoint_url("send_mail")

    if not url:
        return []

    _settings = get_settings()
    return [
        c.Button(
            text="Send Mail",
            on_click=e.PageEvent(name="send-mail"),
            class_name="btn btn-outline-success",
            html_type="button",
        ),
        c.Modal(
            title="Send Mail",
            open_trigger=e.PageEvent(name="send-mail"),
            body=[
                c.ServerLoad(
                    path=url 
                    + "?mails=" 
                    + encrypt(str(_settings.global_config.mails)),
                    load_trigger=e.PageEvent(name="send-mail"),
                    method="POST"
                )
            ],
            footer=[
                c.Button(
                    text="Close", 
                    on_click=e.PageEvent(name="send-mail", clear=True), 
                    named_style="secondary"
                )
            ]
        )
    ]