To upgrade your Hosted Exchange 2013, please follow the steps given below.
1. Plans can be upgraded from within billing portal at https://billing.apps4rent.com/clientarea.php
2. Once logged in, please click on “My Services”.
3. Click on the Services which you wish to upgrade.
4. Click on Upgrade/Downgrade Package at the bottom of the page.
5. Select the plan that you wish to upgrade to from the list and the billing cycle from the drop down.
6. Click on “Click to Continue”.
7. Verify the Charges and the click to continue.
8. Your card will be charged for the relevant amount and the account upgraded.
To download the same document in PDF format with Screenshots, please follow click on the URL given below.