You can import PST to Office 365 with Outlook email client but it is a lengthy and complicated process. In this approach, you need to configure your Office 365 email account with Outlook. However, with Advik PST Converter, you can quickly upload PST to Office 365 without any configuration. It has a dual mode that enables you to import single or multiple PST files in a single attempt. The interface of this utility is very simple and easy to use. You can download its free version to check its work efficiency and accuracy.