Many users face trouble accessing OST files after employee offboarding or mailbox deletion. Since OST files depend on Outlook and Exchange authentication, manual access becomes impossible in most cases. Converting the data into a neutral format like PDF ensures long-term accessibility. SysInfo OST to PDF Converter Tool simplifies this task by working without Outlook installation and retaining email integrity. The preview feature allows users to check message details such as sender, subject, and attachments before conversion. What makes it more flexible is that users can convert OST to PDF and many other file formats, such as PST, MBOX, EML, EMLX, PNG, HTML, CSV, etc., from a single interface. This makes the tool suitable for both backup and migration scenarios without technical complications.