The addresses offered by Asahi Net which are included within the basic charge are: Asahi Net Email Address (xxxxxx@asahi.net.jp) which is issued when you join Asahi Net, and MyMail Address (xxxxxx@subdomain.email.ne.jp) (the first address is offered free of charge).
Please note that Asahi Net Email Address and MyMail Address share the same mailbox.

If you wish to use more than one mailbox, we also offer Additional Mailbox Service. You can add one Additional Mailbox for free, but an initial fee of 220 yen (tax included) is required. You can also register one MyMail Address for free to the added mailbox.

For more details, please refer to the following.
MyMail Address
Additional Mailbox Service