Synchronizing Your cPanel Calendar, Contacts, and Email on Android with ActiveSync

What is ActiveSync?
Microsoft originally developed the Exchange ActiveSync (EAS) protocol—commonly known as ActiveSync—for use by mobile devices in combination with its Exchange Server. The protocol uses a lightweight version of XML called WBXML to optimize traffic for the frequently slow and unreliable connections that may be encountered on cellular networks and public Wi-Fi hotspots.

In cPanel & WHM, ActiveSync support is provided by Z-Push, a piece of open-source software that we distribute in combination with Calendar and Contact Server (CCS) to provide ActiveSync support alongside CalDAV and CardDAV.

Why would I want to use ActiveSync?
Prior to the inclusion of ActiveSync support, owners of Android-based mobile phones and tablets had limited choices for connecting to their cPanel calendars because Android lacks native CalDAV support. The best solution available was to install a third-party app which would serve as an intermediate “connector” between the device’s local calendar and a CalDAV server. The disadvantage to this approach is that it requires each end-user to install and configure the app.

In contrast, with ActiveSync, you can configure and synchronize your account without the use of any third-party app on the mobile device.


How to setup Android to sync Email, Contacts, and Calendar information:

Step 1: Navigate to the account setup screen:

  • Open the Settings app.
  • Select the Accounts or Accounts and backup section. If there is a further subsection called Accounts, select this subsection.
  • Tap on Add account.
  • From here, select the appropriate account type. If you have both Exchange and Exchange ActiveSync, make sure to select Exchange ActiveSync. If the only available type is Exchange, then use this one. (In some cases, it will say EAS or ActiveSync, please choose ActiveSync)

Step 2: Fill in your account details:

  • Enter the same email address that you already use for IMAP or Webmail.
  • Tap Set up manually.
  • Enter your email account password in the Password field.
  • Leave the Domain\Username field unchanged.
  • Leave the Server field unchanged.
  • For the Port, enter 2091
    Note: If you make other changes before proceeding, the port might reset back to 443, and you will need to correct it.
  • Leave the Security type field unchanged.
  • Tap on Next when you’ve finished entering your account information.

Step 3: Enable push updates (optional):

  • Return to the account list within the Settings app.
  • Tap on the newly added account.
  • Tap on Account settings.
  • If prompted to select the account again, tap on the same account.
  • Tap on Sync frequency, and change the setting to Automatic (Push).

And that’s it! You can now use your ActiveSync account for calendars, contacts, and email.

Protip: When creating calendar events, make sure to select the desired calendar, as the default choice might be another account you already configured previously.

What if I have an iPhone?
For iPhone users, there aren’t any advantages to using ActiveSync since CalDAV/CardDAV/IMAP on CCS does data synchronizing for iPhones already, and works great! iPhone users can still use ActiveSync, and it will work, but we recommend just sticking with CalDAV/CardDAV/IMAP for iPhones.


  • exchange, activesync, EAS, exchange activesync, active sync, caldav, carddav, email sync, outlook sync
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