def METHOD_NAME(user, **kwargs):
    try:
        validate_email(user.email)
    except:
        # Invalid email
        return
    if user.email == '%s@example.com' % getattr(user, compat.get_username_field()):
        return
    lang = util.get_pybb_profile(user).language or settings.LANGUAGE_CODE
    translation.activate(lang)
    message = render_to_string(template_name='pybb/mail_templates/subscription_email_body.html',
                               context=kwargs)
    return message.strip()