Download, install, and launch the SysInfo OST Viewer Tool on your Windows system.

Click Load Outlook Files to automatically load OST files associated with configured Outlook profiles, or select Choose Manually to browse and add an OST file from your local system.

Click Browse and navigate to the location where the OST file is stored on your system. Select the desired file and click Open to load it into the software.

After loading the OST file, the software allows you to preview complete mailbox data, including emails, attachments, tasks, notes, message headers, MIME content, and raw HTML information. This detailed preview helps you analyze mailbox items before proceeding with any further action.

Select the desired email from the preview panel and click Open in Browser in the bottom-right corner. The software will open the complete email content in your default web browser for a detailed and convenient view.

After reviewing the mailbox contents, click Save Outlook File to proceed with saving the OST mailbox data. This option allows you to export and store the Outlook file at the desired location for future access and use.

Select the desired file format for saving the OST mailbox data. The software provides multiple saving options, including PST, EML, MSG, PDF, MBOX, and CSV, allowing you to export mailbox items according to your requirements.

Select PDF as the output format to save Outlook emails as PDF documents while preserving email formatting, metadata, and attachments. This format is useful for document sharing, printing, archiving, and compliance purposes.

Use the Duplicate Handling feature to identify and manage duplicate mailbox items during the saving process. This option helps prevent redundant data storage, reduces clutter, and ensures a cleaner and more organized output after exporting the OST mailbox data.

The Attachment Handling section provides multiple options for managing email attachments during the export process. Select the appropriate option based on your requirements for storing and organizing attachment data.

• Keep Attachments: Preserves all original attachments within the exported email files.
• Attachments as Pages: Saves email attachments as separate pages within the output document for easier viewing and reference.
• Extract Attachments Separately: Extracts all attachments into a dedicated folder while saving the corresponding emails independently.
• Exclude Attachments: Omits all attachments during export, saving only the email content and reducing the overall output file size.

Use the Custom Folder option to define a preferred folder name for saving the exported mailbox data. This feature helps organize output files efficiently and makes it easier to manage exported data.

Use the Date Filter option to export mailbox items from a specific time period. This feature helps perform selective exports and ensures that only the required emails are included in the output.

• All Dates: Exports all mailbox items without applying any date restrictions.
• Include Selected Date: Exports only those emails that fall within the specified start and end dates.
• Exclude Selected Dates: Excludes emails that fall within the selected date range while exporting all remaining mailbox items.
• Start Date: Specify the beginning date for the mailbox filtering process.
• End Date: Specify the ending date to complete the selected date range for export.

The Skip Existing / Resume Export feature allows users to continue interrupted export operations without restarting the entire process. It automatically detects previously exported data, skips completed items, and resumes the remaining export tasks efficiently.

• Enable Skip/Resume Detection: Automatically identifies completed export files and resumes unfinished export operations while preventing duplicate data creation.
• Not Complete Files: Displays mailbox items or files that were only partially exported and still require processing.
• Target Path: Shows the source location of the files selected for the resume export process.
• Output Folder: Displays the destination folder where resumed and newly exported files will be saved.

Use the Browse option to navigate through local drives and select the desired destination folder for saving the exported mailbox data. Choosing the appropriate destination path ensures that exported files are stored securely and can be accessed easily after the export process is completed.

After configuring all required export settings, click Save to begin the mailbox saving process. The software exports the selected mailbox data according to the chosen file format, filters, attachment preferences, and destination path settings.

Once the saving process is finished, the software displays a confirmation message indicating that the OST mailbox data has been successfully exported.

Download, install, and launch the SysInfo OST Viewer Tool on your Windows system.

Click Load Outlook Files to automatically load OST files associated with configured Outlook profiles, or select Choose Manually to browse and add an OST file from your local system.

Click Browse and navigate to the location where the OST file is stored on your system. Select the desired file and click Open to load it into the software.

After loading the OST file, the software allows you to preview complete mailbox data, including emails, attachments, tasks, notes, message headers, MIME content, and raw HTML information. This detailed preview helps you analyze mailbox items before proceeding with any further action.

Select the desired email from the preview panel and click Open in Browser in the bottom-right corner. The software will open the complete email content in your default web browser for a detailed and convenient view.

After reviewing the mailbox contents, click Save Outlook File to proceed with saving the OST mailbox data. This option allows you to export and store the Outlook file at the desired location for future access and use.

Choose the Select the desired file format for saving the OST mailbox data. The software provides multiple saving options, including PST, EML, MSG, PDF, MBOX, and CSV, allowing you to export mailbox items according to your requirements.

Choose PST as the output format to save Outlook mailbox data in a widely supported email file format. The software preserves email formatting, folder hierarchy, metadata, and attachments during the conversion process.

Use the Duplicate Handling feature to identify and manage duplicate mailbox items during the saving process. This option helps prevent redundant data storage, reduces clutter, and ensures a cleaner and more organized output after exporting the OST mailbox data.

The Attachment Handling section provides multiple options for managing email attachments during the export process. Select the appropriate option based on your requirements for storing and organizing attachment data.

• Keep Attachments: Preserves all original attachments within the exported email files.
• Attachments as Pages: Saves email attachments as separate pages within the output document for easier viewing and reference.
• Extract Attachments Separately: Extracts all attachments into a dedicated folder while saving the corresponding emails independently.
• Exclude Attachments: Omits all attachments during export, saving only the email content and reducing the overall output file size.

Use the Custom Folder option to define a preferred folder name for saving the exported mailbox data. This feature helps organize output files efficiently and makes it easier to manage exported data.

Use the Date Filter option to export mailbox items from a specific time period. This feature helps perform selective exports and ensures that only the required emails are included in the output.

• All Dates: Exports all mailbox items without applying any date restrictions.
• Include Selected Date: Exports only those emails that fall within the specified start and end dates.
• Exclude Selected Dates: Excludes emails that fall within the selected date range while exporting all remaining mailbox items.
• Start Date: Specify the beginning date for the mailbox filtering process.
• End Date: Specify the ending date to complete the selected date range for export.

The Split PST File feature helps users divide large PST files into smaller, manageable parts during the saving process. This option improves file management, simplifies sharing, and helps maintain optimal Outlook performance.

• Enable Splitting: Activate this option to automatically split the resulting PST file into multiple smaller PST files during export.
• Split Into: Specify the maximum size limit for each split PST file in MB or GB based on your storage and management requirements.
• Store Name: Assign a custom name to the split PST file set for easier identification and organization after the export process is completed.

The Text Filters section enables users to export only the required mailbox data by applying specific filtering conditions. These filters help narrow down email selection based on sender, recipient, or subject information before starting the export process.

• To: Filter emails based on recipient email addresses. Users can include or exclude specific recipients to export only relevant mailbox items.
• From: Filter emails from specific senders or domains to export communications from selected contacts.
• Subject: Search and export emails containing particular subject keywords or phrases for targeted mailbox extraction.

These filtering options help minimize unnecessary data export, reduce processing time, and improve overall mailbox management efficiency.

The Skip Existing / Resume Export feature allows users to continue interrupted export operations without restarting the entire process. It automatically detects previously exported data, skips completed items, and resumes the remaining export tasks efficiently.

• Enable Skip/Resume Detection: Automatically identifies completed export files and resumes unfinished export operations while preventing duplicate data creation.
• Not Complete Files: Displays mailbox items or files that were only partially exported and still require processing.
• Target Path: Shows the source location of the files selected for the resume export process
• Output Folder: Displays the destination folder where resumed and newly exported files will be saved.

Use the Browse option to navigate through local drives and select the desired destination folder for saving the exported mailbox data. Choosing the appropriate destination path ensures that exported files are stored securely and can be accessed easily after the export process is completed.

After configuring all required export settings, click Save to begin the mailbox saving process. The software exports the selected mailbox data according to the chosen file format, filters, attachment preferences, and destination path settings

Once the saving process is finished, the software displays a confirmation message indicating that the OST mailbox data has been successfully exported.