Access your rr.iij4u.or.jp (IIJ4U) Account from an Email Program using IMAP

IIJ4U supports IMAP / SMTP

This means you don't have to use IIJ4U's webmail interface! You can check your email and send messages using other email programs (like Mailspring, Outlook Express, Apple Mail, or Mozilla Thunderbird). Using desktop email applications can improve your workflow. They typically offer more options, and your email is still available on your computer when you're disconnected from the internet.

Setup Your IIJ4U Account with Your Email Program Using IMAP

To access your IIJ4U email account from a desktop email program, you'll need the IMAP and SMTP settings below:

Need a desktop email application? Mailspring is free, packed with great features, and you can try it alongside your existing email program. It's built with love for Mac, Linux, and Windows. 💌

Download Mailspring Free

Learn how to do more with your rr.iij4u.or.jp (IIJ4U) account

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