account_messages table

CREATE TABLE IF NOT EXISTS `account_messages` (
  `accountid` INT(10) UNSIGNED NOT NULL DEFAULT '0' COMMENT 'account id to recieve the message',
  `message` VARCHAR(255) NOT NULL DEFAULT '' COMMENT 'message to send',
  PRIMARY KEY (`accountid`,`message`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='Messages to be sent to the characters of an account when they log in';