Nine APK is a free business app for Android by NextIntelligence.ai. Nine is a full-fledged and intuitive email app which supports Exchange and IMAP. On this page you can get the latest version 4.9.8, read what it offers and follow a simple install guide.
What Is Nine APK?
Nine belongs to the Business category and is built by NextIntelligence.ai. It has already reached 1,000,000+ installs on Google Play with an average rating of 2.9/5 from 31,985 ratings, which shows how many people rely on it every day.
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.
There might be nothing more important than efficient communication in the work of a company. You may already have good experience with other E-Mail apps for Android.
Downloading the Nine APK file lets you install the app directly, update it on your own schedule and keep a backup of the version that works best on your phone.
Key Features of Nine APK
- 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.
- 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.
Nine App Information
| App name | Nine – Email & Calendar |
| Package | com.ninefolders.hd3 |
| Category | Business |
| Developer | NextIntelligence.ai |
| Latest version | 4.9.8 |
| Requires Android | 8.0 |
| Installs | 1,000,000+ |
| Rating | 2.9/5 from 31,985 ratings |
| Last updated | October 29, 2026 |
| Price | Free |
How to Download and Install Nine APK
- Scroll to the download button on this page and tap it to save the Nine APK file.
- Open Settings on your phone and allow installs from your browser or file manager when asked.
- Open the downloaded file and tap Install.
- Wait a few seconds, then tap Open to start Nine.
- Switch the unknown-sources permission back off to keep your phone protected.
What’s New in Nine 4.9.8
Fixed IMAP attachments with non-ASCII names showing as "noname"; re-downloading a message now restores names of attachments it already has. Calendar: events longer than 24 hours now appear in the all-day area of Day/3-Day/Week views. Fixed buttons hidden behind the navigation bar on several screens. S/MIME reliability improvements and security updates to bundled libraries (OpenSSL, Guava, Apache POI, jQuery). The listing was last updated on October 29, 2026.
Tips for the Best Experience with Nine
- Keep at least 500 MB of free storage so Nine can install and update smoothly.
- Use a stable Wi-Fi connection when you download the file or open the app for the first time.
- Grant only the permissions that Nine really needs and review them from time to time.
- Restart your phone after a big update if the app feels slow or freezes.
Device compatibility
Nine works on phones and tablets running Android 8.0 or higher. Older devices may run it a little slower, so close background apps if you notice lag.
Is Nine APK Safe to Use?
Nine is the same app that is published on the official Google Play listing. Always download from a source you trust, keep your phone updated and scan files with a security app if you are unsure.
Looking for something similar? Browse our Business apps or discover more free Android apps.
Nine FAQ: Common Questions Answered
Is Nine APK free to download?
Yes. Nine is free to download and use. Some features may offer optional in-app purchases.
What is the latest version of Nine?
The latest version listed here is 4.9.8. It was last updated on October 29, 2026.
Which Android version does Nine need?
Nine needs Android 8.0 or newer to run properly.
How do I update Nine?
Come back to this page for the newest file, download it and install it over the old version. Your data stays in place.
Final Thoughts on Nine
If you want a reliable business app, Nine APK is worth installing. Use the button above to get version 4.9.8 and enjoy everything Nine has to offer.
