Follow these steps:
Enter your email address
You will be redirected to the ‘sign up now’ page, give the CorpSync Cloud dashboard consent to access your Office 365 GAL and import your contacts into the platform.
Click Sync Now
Your synced contacts are automatically saved to a subfolder called CorpSync.
Open Contacts on the native Address book of your smartphone
Contacts will now be available on your Outlook-enabled smartphone. Changes to contacts will automatically be reflected across all users when they are made on the backend.