OSTtoPSTAPP Office 365 Backup Software is an easy tool for users to save their Office 365 data securely on their computer. It allows the user to export emails with attachments. It supports multiple output formats like PST, EML, MSG, MBOX, etc. It is compatible with all versions of Windows, including the latest Office 365. It is very easy to use with an intuitive interface, suitable for both novices and experts. The software guarantees safety of data and stores the original mailbox structure during backup. Users can set filters to select specific data for backup. A demo version is free, and interested users can evaluate its features before going for the paid version.