DoCoMo erects i-mode anti-spam defences
Under a new Japanese law, all spam email must contain the subject line mishodaku kokoku (which means unsolicited advertisement). DoCoMo will simply block i-mode email that contains this line. The company plans to start this on October 1, and customers can apply to opt back in by de-activating the service on the i-mode portal.
However, it remains to be seen how successful this will be, as the measures to restrict spam globally are proving far from easy implement, and many spammers simply ignore them.