How to Set Up Iijmio-mail.jp Email

To set up your email account on macOS or Windows, first download and install the Postbox desktop email app. Next, from the File menu select New > Mail Account, then enter the email settings outlined below.

Email Settings for Iijmio-mail.jp

Incoming Server – IMAP

Server: mbox.iijmio-mail.jp
Port: 993 or 143
Security: SSL/TLS
Username: Your full email address
Password: Your password

Outgoing Server – SMTP

Server: mbox.iijmio-mail.jp
Port: 587
Security: STARTTLS
Username: Your full email address
Password: Your password

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macOS + Windows