CubexSoft PST Converter is one of the best tools to directly convert PST files to Office 365 account with attachments. It allows you to convert Outlook emails, contacts, calendars, tasks, notes, and other into Office 365 cloud platform without using Outlook. This software offers various file formats such as MBOX, EML, MSG, DOC, RTF, OLM, PNG, JPEG, Zimbra, NSF, AOL, Yahoo Mail, IMAP, Thunderbird, Outlook.com, and many more,. You can also use the free demo version to convert the first 25 items without any cost.