iPhone,iPad iPod touch用アプリをランキング掲載！ レビューを分析して日本で人気のあるiPhoneアプリを見つけられます。

As of today email communication became a critical thing as interpersonal communication skill within an organization or in your daily life. There might be nothing more important than efficient communication in the work of a company. Nine is a full-fledged email application to synchronize with Microsoft Exchange Server using Microsoft Exchange ActiveSync, and also designed for entrepreneurs or ordinary people who want to have efficient communication with their colleagues, friends, ‎and family members at anytime, anywhere. You may already have good experience with other E-Mail apps. Regardless of your existing experience, we will give you a superb experience more than anything else. Leveraging E-Mail, Contacts and Calendar on your mobile devices through wireless networks enhances your user experience and dramatically reduces your time.

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Nine is not a free app.
After enough time using the free trial for 2 weeks and you are satisfied, you need to join Premium Membership.

There are two ways to join Premium Membership.
1. Subscription ($1.99 / 3 months or $ 2.99 / 6 months): The license should be updated every 3 months or 6 months.
2. Lifetime Member ($14.99): It is a lifetime license and users do not need to update the license.

Your subscription automatically renews unless auto-renew is turned off at 24-hours before the end of the current period. You can manage your subscription and turn off auto-renew from your iTunes Account settings.