Nine - Email & Calendar

In-app purchases
3.4
31.9K reviews
1M+
Downloads
Content rating
Everyone
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About this app

The 100 Best Android Apps for 2019 - https://bit.ly/2PWe259
16 Android Apps Actually Worth Paying For - https://bit.ly/2G7vkJX

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Nine is not a free app.
After enough time using the free trial for 2 weeks and you are satisfied, please purchase Nine licenses.
The price for a license is US $14.99.
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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 for Android based on Direct Push technology 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 for Android. Regardless of your existing experience, we will give you a superb experience more than anything else. Leveraging E-Mail, Contacts, Calendar, Tasks and Notes on your mobile devices through wireless networks enhances your user experience and dramatically reduces your time.

Key features
- Direct Push Synchronization with Exchange ActiveSync. Nine does not have any server to store user's Nine data. Nine app connects to user server directly. All Nine data is stored in user device only.
- Calendar and Contacts (Integrated into stock Calendar and Contacts application along with Nine account)
- Rich-Text Editor
- Client Cert
- S/MIME
- IRM
- Global Address List (GAL)
- Select folders to push (Email notification per each folder)
- Full HTML (inbound, outbound)
- Secure Sockets Layer (SSL)
- Hybrid Email Search (Integrate with fast local search and online search)
- Conversation Mode
- Unread Badge (Nova Launcher, Apex Launcher, DashClock and Samsung, Sony, Huawei & LG devices)
- Widgets (Unread badge, Shortcuts, Email list, Tasks list and Calendar Agenda)
- Notes Sync (Exchange 2010 and higher)
- Tasks & Calendar Sync
- Modern Authentication for Office 365

Supported Servers
- Exchange Server 2003 SP2, 2007, 2010, 2013, 2016, 2019
- Office 365, Exchange Online
- Hotmail
- Outlook.com
- Gmail, G Suite (Google Apps)
- iCloud
- Other servers(IBM Notes Traveler, Groupwise, Kerio, Zimbra, Horde, IceWarp, MDaemon, Kopano etc) supported Exchange ActiveSync
- Other servers(Yahoo, GMX, Mail.ru, etc) supported IMAP

Permission Details
* WRITE_EXTERNAL_STORAGE 
- To copy the attachment to an external storage and to export Nine settings.
* READ_EXTERNAL_STORAGE
- To import attachments from an external storage and to import Nine settings.
* CALL_PHONE
- To call a contact in Nine Contacts
* READ_PHONE_STATE
- To deliver the Device information to server (ActiveSync function)
* GET_ACCOUNTS
- To use the account for purchasing a license and to manage accounts information registered in system.
* WRITE_CONTACTS, READ_CONTACTS
- To use when syncing the user's contacts to server
* WRITE_CALENDAR, READ_CALENDAR
- To use when syncing the user's calendar to server
* CAMERA:
- To scan QR code for Entrust Smart Credentials

** Available Android
- Android 4.1 (Jelly Bean) and above

** Note
- Nine is not cloud based. It stores your accounts’ passwords only on the actual device. It connects only to the actual mail servers. It stores your messages only on the device.
- Nine uses the Device Administrator permission.

** Support
- If you have a question or a special request, just send an email to support@9folders.com and we will get back to you as soon as we can.
Updated on
Jan 29, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

3.4
30.4K reviews
Tim C
July 4, 2025
I'm letting you know my disappointment because I found out over email with your support that you are no longer going to develop/improve this app because you are working only on OfficeMail Pro going forward. This is unacceptable. First, I am not going to pay a subscription fee for email sync, that's ridiculous. Second, I couldn't if I want to because that would violate our company security policy to connect directly to O365 and not use an intermediate party.
16 people found this review helpful
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Juan D. Martínez
August 14, 2025
I've just received excellent e-mail technical support from the 9Folders Support Team on a slow syncing issue and I could not be happier. I know that attention and resources are now focused on their new OfficeMail product and there have not been any new updates to the app in a long time, but if you're an existing Nine paid customer, you will find that 9Folders has not completely abandoned the Nine app, at least not in terms of customer support.
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Amy Hughes
December 10, 2024
Used for years and I stick with it because of the feature set, especially the ability to see new email buried in a folder. I use Outlook rules to move incoming email and this app lets me see those messages. I don't want to move to their new app due to the way it managed data in the cloud. Issues: calendar reminders are not on time (sometimes the next day), calendar labels are wrong (I have many calendars)
9 people found this review helpful
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What’s new

* Fixed the account verification issue with the base64 encoding format for the URI query value used in Outlook accounts.