Getting the statistics with the default parameters... object(stdClass)#10200 (2) { ["Code"]=> int(100) ["Message"]=> string(15) "Invalid API Key" } Getting the statistics, filtered to a classic group... object(stdClass)#10202 (2) { ["Code"]=> int(100) ["Message"]=> string(15) "Invalid API Key" } Getting the statistics, filtered to a smart email... object(stdClass)#10201 (2) { ["Code"]=> int(100) ["Message"]=> string(15) "Invalid API Key" } Getting the most recent sent messages...