As far as Netscape Navigator is concerned, it is not yet compatible with MRJ 2.2 but Apple and Netscape being working together to make it compatible, our service will be soon available for Netscape users, too.
outgoing SMTP mail server = smtp.hikyaku.com
incoming POP3 mail server = pop.hikyaku.com
Please note that because the most of Internet providers not allowing to send mails of other accounts (i.e. Hikayku account, for example) through their server, you may have to connect to Hikyaku server as usual, if you want to send or reply a message through Hikyaku account.