{$lang->cmd_advanced_mailer_sending_method_config}
※ {$lang->cmd_advanced_mailer_about_sending_method}
{$lang->msg_advanced_mailer_php_version_is_low}
{@ $conf_value = $advanced_mailer_config[$sending_method . '_' . $conf_name]}
{$lang->msg_advanced_mailer_about_dummy}
{$lang->msg_advanced_mailer_about_mail}
{$lang->msg_advanced_mailer_about_smtp}