Settings > Emails page. Otherwise (if false), when sending the copy of Confirmation email to admin, sends a "from" field of email not the email of server, but email from the person, who made reservation. Its useful for "reply to this emails", but when receiving such email, Yahoo mail for instance rejects it, and google mail puts a warning about fishing etc. if (!defined('OPSD_IS_SEND_EMAILS_ON_COST_CHANGE')) define('OPSD_IS_SEND_EMAILS_ON_COST_CHANGE', false ); //FixIn: 6.0.1.7 // Is send modification email, if cost was changed in admin panel if (!defined('OPSD_LAST_CHECKOUT_DAY_AVAILABLE')) define('OPSD_LAST_CHECKOUT_DAY_AVAILABLE', false ); //FixIn: 6.2.3.6 // Its will remove last selected day of item during saving it as item. if (!defined('OPSD_PAYMENT_FORM_ONLY_IN_REQUEST')) define('OPSD_PAYMENT_FORM_ONLY_IN_REQUEST', false ); // Its will show payment form only in payment request during sending from item Listing page and do not show payment form after visitor made the item. if (!defined('OPSD_AUTO_APPROVE_WHEN_ZERO_COST')) define('OPSD_AUTO_APPROVE_WHEN_ZERO_COST', false ); // Auto approve item, if the cost of item == 0 if (!defined('OPSD_CHECK_LESS_THAN_PARAM_IN_SEARCH')) define('OPSD_CHECK_LESS_THAN_PARAM_IN_SEARCH', false ); // Check in search results custom fields parameters relative to less than in search form, and not only equal. //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // SYSTEM CONSTANTS ////////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// if (!defined('OPSD_MINOR_UPDATE')) define('OPSD_MINOR_UPDATE', true ); if (!defined('IS_USE_OPSD_CACHE')) define('IS_USE_OPSD_CACHE', true ); if (!defined('OPSD_DEBUG_MODE')) define('OPSD_DEBUG_MODE', false ); if (!defined('OPSD_MIN')) define('OPSD_MIN', false );//TODO: Finish with this contstant, right now its not working correctly with TRUE status if (!defined('OPSD_RESPONSE')) define('OPSD_RESPONSE', false );