There are many programs available in the market, but the question is- which is the best among them? Here, to import PST to Office 365 Outlook, you can use the demo edition of the top solutions like MailsDaddy PST to Office 365 Migration Tool, A2Z Migrations for PST to Office 365, BitaCube, etc.
Each software provides a trial version so that you can check and use the tool that is comfortable for you. All these applications are very easy to use as they all are based on a graphical user interface. Know the important features of the software here: https://www.mailsdaddy.com/pst-to-office-365-migration-tool/
GainTools Cloud Importer Utility is a common hitch faced by almost every user that usages the PST email client. PST file being supported by Outlook to import it to other clients like an Office 365 For that everybody requirements to recognize the secure explanation on how to convert PST files to Office 365 format with reliable software.
To import PST to Office 365, one can make use of Shoviv PST to Office 365 Migration tool. Using this tool, Outlook users can import corrupted and non-corrupted PST files into Office 365, Live Exchange Server, new PST, EML, and MSG. I would also suggest you download a trial version of this tool to check out its features and working process.