What should I do if I don't receive the confirmation code e-mail?
Check whether the e-mail address "no-reply@dmapp.jp" has been blocked by your e-mail service. Junk mail (spam) filters may result in the message being automatically sent to the junk mail folder or otherwise moved/deleted. Please confirm your e-mail filter settings. If you use junk mail (spam) filters on your e-mail account, please change your settings as described below to allow receipt of e-mails from "no-reply@dmapp.jp".
* If you still cannot receive e-mails normally after changing domain settings as described here, please contact your provider for assistance.