To convert PST to TGZ format without losing data, you can utilize EmailSoftwares Outlook to Zimbra Converter. This is a robust tool that provides a hassle-free conversion of Outlook PST files to Zimbra-supported TGZ format, preserving email metadata, attachments, and folder hierarchy intact. It supports both ANSI and UNICODE PST files and batch conversion, even for large PST files. The software is not necessary to be installed with Outlook or Zimbra, and hence, the process is free from any hassle. The software has a user-friendly GUI and includes easy-to-use conversion process, and to experience its functionalities, there is a free trial available. Experience it today for precise, accurate PST to TGZ conversion!