Download, install, and run the SysInfo OLM File to CSV Converter as an administrator.

You get three options on the opening interface. Click any of these to load OLM data. These are:

• Select OLM File(s): To pick one or more Outlook for Mac files and upload them for the conversion simultaneously.
• Select Folder: Use it to choose the folder from the system containing all OLM emails to convert.
• Drag and Drop OLM Files: This allows you to directly drag and drop OLM emails from the system into the software.

Click any button as desired, select the Outlook for Mac email files to convert, and press Open.

Once the files are added, you can check their attributes like Path and Size. In case any file is not required or added accidentally, click Remove Selected to clear the file. To remove all the files added, press Clear List.

If everything is correct and you want to proceed with the conversion, check the files in the Select column to convert and tap Proceed.

After the files are loaded, a tree structure is shown. Press Expand All Folders to check the entire tree hierarchy with OLM folders and subfolders.

In the expanded tree hierarchy, select a folder to view the files within it. Use the Search Folder option to identify a specific folder from the tree with a keyword (like Inbox, Drafts, etc.). Use Collapse Folders to close the expanded tree hierarchy.

Double-click any folder and all the files within it appear on the right. Use the Advanced Search option to locate a specific file by a keyword in To, From, or Subject.

Further, double-click any email file you want to check the preview of, and a Preview Mail dialog will appear. Here, you can verify the data integrity and attachment preservation. You can review email data by different categories, such as HTML Body, Attachment, Plain Text, Calendars, Contacts, Headers, MIME, and Raw HTML.

If the preview in the software fails for any reason, you can check the Open in Browser (if preview fails) option to verify data on the web.

Later, once your preview completes, choose the folders from the tree structure for the conversion and tap Proceed.

In the new window, expand the list of file formats, and you can opt for CSV Spreadsheet (CSV) from the drop-down menu.

Before the conversion of your OLM to CSV, use these general filters for efficiency:

• Date Range Filter: Use it to make the conversion of OLM files for a specific timeframe by setting the Start and End dates.
• Custom Output Folder: Use it to provide your resultant CSV a unique name for easy identification.
• Skip Existing Exports: This filter allows you to perform incremental conversions by only transferring the data that isn’t exported.

Furthermore, to make more specific and flawless conversions, use these advanced filters:

• Attachment Handling: Use it to manage your attachment files in either way you like. You can choose to export attachments separately or exclude attachments.
• Duplicate Detection: This filter allows you to exclude similar items based on To, From, Body, Subject, and CC.

Click the Browse button after applying filters and opt for a folder location to save the CSV. Press Open and finally, tap Start Export to make the conversion.

You can check the process of data export in the final window and use the Stop Process button to halt the conversion in case if needed.

After your conversion is complete, click Close and check the completion status. Press Export Log to check the detailed report of the conversion in a CSV file. Also, use the Start New Export button to restart the conversion.