Import OST into Office 365/Exchange Online Using OST Converter Software

Users can have access to advanced Exchange Server functionality without actually owning an on-premises Exchange Server in their company thanks to Exchange Online. Exchange Online is a component of the Business and Enterprise Editions of the Microsoft 365 subscription plans. Although it is available as a solo product, Microsoft 365 offers it integrated with other MS Office products. One advantage of having a Microsoft 365 subscription is the ability to purchase licenses based on the estimated number of users.

When utilizing Microsoft Outlook offline mode with Exchange Server, we are aware that OST files are used to store copies of users’ email messages, contacts, and other data. To continue using the same email messages, contacts, and other data when customers switch to Office 365, they may choose to import their OST files. How to import OST to Office 365 is described in detail in this post.