As an alternative to Exchange ActiveSync, the Kerio Connect Sync application for Android devices uses CalDAV and CardDAV to:

 - Synchronize your tasks, calendars, and contacts
 - Synchronize public folders
 - Push notifications to immediately synchronize changes
 - Synchronize calendar colors

Installing the application:

Kerio Connect sync is a free application available on Google Play.

https://play.google.com/store/apps/details?id=com.kerio.connect.sync

Installing the Application

Note: This article is based on Android 5.0.2

To start synchronizing:

1. On your Android device, open Kerio Connect Sync.

2. Type your email address and tap Next. (username@kernel.rz-berlin.mpg.de)

3. Type your password and tap Next.

4. Verify (or type) the server name, your username and password, and tap Sign in.

5. Confirm the certificate for your server if warning appears.

6. Select the task and calendar folders to synchronize with your device and tap Next.

7. Select the contact folders to synchronize with your device and tap Finish.

8. Tap Done.

Kerio Connect Sync is ready to synchronize your tasks, contacts, and calendars.