`created` datetime DEFAULT '0001-01-01 00:00:00' COMMENT '',
`command` varbinary(32) COMMENT '',
`failed` tinyint DEFAULT 0 COMMENT 'Number of times the delivery has failed',
+ `receivers` mediumtext COMMENT 'JSON encoded array with the receiving contacts',
PRIMARY KEY(`uri-id`,`inbox-id`),
INDEX `inbox-id_created` (`inbox-id`,`created`),
INDEX `uid` (`uid`),