json - Mailgun stats don't add up -

i'm trying make sense of mailgun stats returned api, , numbers don't add up.

i'm making following call

$stats = $mg->get('example.com/stats/total', array(     'event' => array('accepted', 'delivered', 'failed', 'stored'),     'duration' => '1m',     "resolution" => "month" )); 

and result (re-formatted json easier reading)

{     'accepted' : {         'incoming' : 200,         'outgoing' : 458,         'total' : 658     },     'delivered' : {         'smtp' : 399,         'http' : 0,         'total' : 399     },     'failed' : {         'temporary' : {             'espblock' : 0         },         'permanent' : {             'suppress-bounce' : 0,             'suppress-unsubscribe' : 0,             'suppress-complaint' : 0,             'bounce' : 0,             'total' : 0         }     },     'stored' : {         'total' : 0     } } 

now, don't understand this: shouldn't sum of delivered messages + failed messages + stored messages greater or equal number of accepted outgoing messages? in example quit lower, , doesn't seem make sense me.

i appreciate thoughts on this.

normally, accepted outgoing messages equal sum of delivered messages + bounces messages.

try using date (something start/end) rather duration/resolution.

that's used in cron, , worked. can go dashboard of mailgun check , compare results