How to Convert OLM to PST - A Complete Guide

Mar 12, 2024 | By Deepak Singh Bisht

In today's digital age, managing and migrating email data across different platforms has become a common necessity for individuals and businesses alike. Whether you're transitioning from a Mac to a Windows environment, seeking to backup your Outlook for Mac emails in a more versatile format, or simply aiming to ensure your email data is accessible across multiple devices, understanding how to convert OLM to PST is invaluable. This comprehensive guide is designed to demystify the OLM to PST conversion process, providing you with a step-by-step approach to securely and efficiently transform your Outlook for Mac (OLM) files into PST format for use with Microsoft Outlook on Windows.

We will explore a variety of methods to achieve this conversion, from utilizing the best OLM to PST converter software to guiding you through how to convert OLM to PST manually, ensuring there's a solution that fits every need and technical capability. Beyond the how-to, this guide will delve into the compelling reasons why converting OLM to PST is a wise move for anyone looking to enhance their email management and accessibility.

Whether you're planning on moving from Mac to Windows Outlook, seeking to transfer your Outlook Mac emails to a Windows system, or aiming to create a reliable backup of your Outlook Mac emails in PST format, this guide has got you covered. By the end of this journey, you'll be equipped with the knowledge and tools necessary to perform an OLM to PST conversion with confidence.

What is an OLM file?

An OLM file is a data file created by Microsoft Outlook for Mac, the macOS version of the popular email and calendaring software. This file format is proprietary to Outlook for Mac and serves as a storage container for a user's email messages, contacts, calendar events, tasks, and other Outlook data. Essentially, OLM files encapsulate a user's mailbox data, allowing for the backup or transfer of information within Outlook for Mac environments.

The primary purpose of an OLM file is to facilitate data portability and backup within the Outlook for Mac application. For users looking to migrate their email data from a Mac to another Mac, or to simply create a comprehensive backup of their Outlook for Mac data, the OLM file format provides a convenient way to package and export their information.

Why Convert OLM to PST?

The need to convert OLM to PST arises from several practical requirements and benefits associated with email data management, accessibility, and platform compatibility. Whether you're transitioning from a Mac to a Windows environment, looking to access your Mac Outlook emails on a Windows machine, or aiming to create a versatile backup of your email data, understanding the importance of OLM to PST conversion can significantly enhance your digital communication experience.

Platform transition and compatibility: One of the top reasons to convert OLM to PST involves moving from Outlook on Mac to its Windows counterpart. Windows Outlook can't read Mac's OLM files directly. This means, if you're transitioning your main operating system from macOS to Windows, you'll need an OLM to PST conversion to keep your emails flowing smoothly. This process ensures that all your emails, contacts, calendar entries, and tasks from Outlook on Mac are transferred seamlessly to Windows Outlook.

Unlock more features with interoperability: Converting OLM to PST enables the use of your email data within Windows Outlook, which offers a comprehensive suite of features including advanced search capabilities, seamless integration with other Microsoft services, and robust data management and security tools. This conversion allows you to leverage the full potential of Windows Outlook's functionalities.

Reliable backup solution: Converting Outlook Mac emails to PST offers a substantial advantage: it enables the creation of a versatile and reliable backup. By storing your Outlook Mac emails in PST format, you effectively shield your data from common threats such as hardware failures, software malfunctions, and accidental deletions. In situations where you need to quickly restore your email environment, having a PST backup proves to be invaluable.

Streamline your email management: The OLM to PST conversion process significantly simplifies data migration and archiving. Whether you're transitioning to a new computer, merging multiple email accounts, or need to archive old messages for compliance purposes or historical reference, converting your files to PST format streamlines these tasks. This conversion facilitates a smoother and more efficient approach to organizing and preserving your email data, making it easier to manage and access whenever needed.

In summary, the decision to convert OLM to PST is driven by the need for platform compatibility, enhanced data accessibility, reliable backup options, and simplified data management. It can significantly improve your email management strategy, ensuring that your valuable communication data remains accessible, secure, and effectively organized.

How to Convert OLM to PST?

Converting OLM files to PST format is essential for users looking to transition their email data from Mac Outlook to Windows Outlook, ensure their emails are accessible in a Windows environment, or create versatile backups of their Outlook Mac emails in PST format. There are primarily two approaches to achieve this: manually converting OLM to PST and using specialized OLM to PST conversion software. Below, we explore both methods to guide you through this important process.

Note: Before converting OLM to PST, always back up your Outlook for Mac data. This step is crucial to prevent potential data loss during conversion. You can back up by exporting your OLM file to a secure location on your computer or an external drive. Having this backup ensures you can restore your original data if needed.

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Method 1: Convert OLM to PST using Gmail IMAP

This method involves leveraging Gmail's IMAP protocol to facilitate the conversion of OLM files to PST. To proceed with this method, ensure you have access to a Gmail account and have MS Outlook installed on both your Mac and Windows devices. Let's break down the steps for this OLM to PST conversion process.

Step 1: Enable IMAP in Gmail

  1. Sign in to your Gmail account through a web browser.
  2. Click the gear icon in the upper right corner and select See all settings.
  3. Go to the Forwarding and POP/IMAP tab.
  4. In the IMAP access section, select Enable IMAP.
  5. Click Save Changes at the bottom.

Step 2: Generate an App Password

  1. Visit
  2. Under Security, enable two-step verification if it's not already activated.
  3. Then, find and select the App passwords option under Security.
  4. Enter Outlook MAC & Windows as the app name and click Create.
  5. Copy the App password and click Done.

Step 3: Configure Gmail in Outlook Mac

  1. Open Microsoft Outlook on your Mac.
  2. Navigate to Outlook > Preferences > Accounts.
  3. Click the + sign at the bottom of the screen and select Email.
  4. Enter your full Gmail address and the App Password you previously generated.
  5. Make sure IMAP is selected as the Type. Outlook should automatically fill in the server details for incoming ( and outgoing servers (
  6. Click Add Account.

Step 4: Import OLM to Gmail

  1. In Outlook for Mac, locate your Gmail account in the sidebar.
  2. Right-click (or Control-click) on your Gmail account or on an existing folder under your Gmail account where you want to create the new folder.
  3. From the context menu, select New Folder.
  4. Name your new folder by typing in the desired name when prompted, then press Enter or click away to finalize the creation of the folder.
  5. Locate the emails in Outlook you wish to move to Gmail. To select all use Command + A.
  6. Hold the Command key and drag the selected emails, then drop them into the new folder you created in your Gmail account.
  7. After that, the emails will import into your Gmail account. Verify that the emails have been moved to the correct folder/label.

Step 5: Configure Gmail in Windows Outlook

  1. Open MS Outlook and click the File option.
  2. Click the Account Settings > Account Settings.
  3. Enter your name and Gmail email address.
  4. Enter your App password and re-enter your App password.
  5. Click the Next button to start the verification process.
  6. Once the validation process is complete, click on the Finish button.

Step 6: Export PST using Outlook

  1. Within Windows Outlook, go to File > Open & Export > Import/Export.
  2. Select Export to a file and click the Next button.
  3. Select Outlook Data File (.pst) and click the Next button.
  4. Select the Gmail folder where you imported your Mac Outlook emails.
  5. Ensure Include Subfolders is checked and click on the Next button.
  6. Click the Browse button, provide a path to save the PST file, and click the OK button.
  7. Select Do not export duplicate items and click the Finish button.

By following these steps, you effectively convert OLM to PST using Gmail as an intermediary, enabling you to transfer Outlook Mac emails to Windows without the need for specialized OLM to PST software. This method not only facilitates the moving from Mac to Windows Outlook but also serves as a method to backup Outlook Mac emails in PST format, ensuring your data remains accessible and secure.

Method 2: Convert OLM to PST using OLM to PST Converter

For those who find the manual approach to be overly complicated or too time-consuming, leveraging a dedicated OLM converter tool presents a more streamlined and efficient alternative. Tools like SysCurve OLM to PST Converter are specially designed to simplify the OLM to PST conversion process, offering a direct path to convert OLM files into PST format. Besides PST, these tools often support converting OLM files into other formats such as MBOX, EML, MSG, HTML, and RTF, providing flexibility depending on your needs.

  1. Download and install the SysCurve OLM to PST Software.
  2. Open the OLM Converter tool and click the Browse button.
  3. Locate and select your OLM file and click OK to upload the file for conversion.
  4. Once the loading process is complete, you can view OLM file data.
  5. Click the Export option and choose the specific folders you wish to convert from OLM to PST.
  6. Select PST as an export option and specify a destination path where you want the new PST file to be saved.
  7. Click the Export button to start the OLM to PST conversion.
  8. Once the conversion is complete, click the Finish button. Your PST file is now ready for import into Microsoft Outlook on Windows.

Note: Before you can use the SysCurve tool for OLM to PST conversion, it's necessary to transfer the OLM file from your Mac computer to the Windows system where the conversion tool is installed. This transfer can be accomplished by copying the OLM file onto an external storage device, such as a USB drive or an external hard drive, and then moving it to your Windows PC. It's essential to ensure that the OLM file is completely and safely copied over before starting the conversion to avoid any data loss.

Using an OLM to PST converter tool like SysCurve simplifies the process of moving from Mac to Windows Outlook, effectively allowing you to transfer Outlook Mac emails to Windows. This method is not only more straightforward but also provides a reliable way to backup Outlook Mac emails in PST format, ensuring that your data remains accessible and secure on your new platform.

Other Helpful Features

  • Convert OLM to PST, MBOX, MSG, EML, HTML, MHTML, and other file formats.
  • Preview all OLM items.
  • Perform selective conversion based on To, Cc, Bcc, Subject, and Date.
  • Migrate OLM to Office 365 and Live Exchange Server.
  • Maintain original folder structure.
  • Preserve mail properties.
  • Free OLM to PST conversion for the first 20 items per folder.
  • Support all versions of MS Outlook
  • Compatible with Windows OS.

Frequently Asked Questions

Why should I convert OLM to PST?

Converting OLM to PST enables seamless access to Mac Outlook emails within Windows Outlook, simplifies the transfer of data between Mac and Windows platforms, and facilitates the creation of reliable backups in PST format. This ensures your Outlook data remains accessible and secure.

Can I convert OLM to PST manually?

Yes, it's possible to manually convert OLM to PST using the Gmail IMAP method. This involves syncing your Outlook for Mac data with a Gmail account, configuring this account in Windows Outlook, and then exporting the data to a PST file, though this process may be more suitable for users with smaller datasets or those looking for a no-cost solution.

What are the benefits of using the SysCurve OLM to PST Converter tool?

The SysCurve OLM to PST Converter streamlines the conversion process, ensuring time efficiency and data integrity. This tool supports batch conversions, maintains the original folder hierarchy, and allows for selective conversion. Additionally, it supports converting OLM files into various formats, including MBOX, EML, and MSG, providing greater flexibility in how you use your data.

What is the best OLM to PST converter tool?

SysCurve OLM to PST Converter tool is highly regarded for its user-friendly interface, swift conversion speeds, and comprehensive data integrity safeguards. It offers advanced features such as batch conversion and compatibility with multiple file formats, making it a top choice for OLM to PST conversion needs.

Can I transfer Outlook Mac emails to Windows without specialized software?

While transferring emails without specialized software, like the manual Gmail IMAP method, is feasible, it can become cumbersome and complex, especially for larger datasets. A dedicated tool, such as the SysCurve OLM to PST Converter, offers a more streamlined and efficient conversion process.

Is it safe to convert OLM to PST using SysCurve OLM Converter tool?

Yes, converting OLM to PST with the SysCurve OLM Converter tool is safe. The software is designed to operate without altering the original OLM file, securely saving your data on your system.

Will converting OLM to PST affect my original OLM file?

No, the SysCurve OLM to PST Converter tool does not modify your original OLM file. It creates a new PST file, leaving the original file intact and unchanged.

Can I convert OLM to PST without Outlook?

Yes, you can perform OLM to PST conversion using the SysCurve OLM Converter tool without requiring Microsoft Outlook or any other software. It operates as a standalone application, making the conversion process accessible to all users.

How long does it take to convert OLM to PST?

The conversion time varies depending on your OLM file's size and your computer's specifications. The SysCurve OLM to PST Converter tool is designed for efficiency, processing large files more quickly than others.

Can I use this tool to convert large-size OLM files?

Yes, the SysCurve OLM to PST Converter is capable of handling large-size OLM files with ease, ensuring a smooth conversion process regardless of file size.

Does the SysCurve OLM Converter tool come with a demo version?

Yes, the SysCurve OLM to PST Converter tool offers a free demo version. It allows users to preview their OLM file data and export the 20 items per folder, providing a firsthand look at the tool's functionality before committing to a purchase.

The Final Word

In navigating the digital landscape, the ability to effectively manage and migrate email data stands as a crucial competency for both individuals and businesses. The conversion from OLM to PST represents a strategic move for anyone transitioning from Mac to Windows Outlook, aiming for a comprehensive backup solution, or seeking to ensure email accessibility across diverse platforms. This guide has laid out a clear path, demystifying the OLM to PST conversion process and highlighting its indispensable benefits.

Whether through the manual method leveraging Gmail IMAP or employing the efficiency and reliability of a tool like SysCurve OLM to PST Converter, the options available ensure that there's a solution to fit every need and technical capability. From enhancing email management to securing data and improving interoperability within the Windows environment, the reasons to convert OLM to PST are compelling and manifold.

SysCurve's OLM to PST Converter tool, in particular, has been spotlighted for its user-friendly interface, swift conversion speeds, and the ability to maintain data integrity, making it an excellent choice for those looking for a hassle-free conversion experience. Its support for batch conversions and ability to handle large-sized OLM files further underscore its utility and effectiveness.

As we conclude this comprehensive guide, it's clear that converting OLM to PST not only facilitates a smooth transition between computing environments but also empowers users with greater control and flexibility in their email data management practices. With the right tools and knowledge, ensuring that your valuable communication data remains accessible, secure, and effectively organized, regardless of your platform choice, is entirely achievable.

The Author

Deepak Singh Bisht

Deepak Singh Bisht

Content Lead |

Deepak Singh Bisht is a dedicated IT professional with over 9 years of experience, is a key member at SysCurve Software for the last 5 years. His expertise lies in email migration and data recovery, with a focus on technologies like MS Outlook and Office 365. Deepak, who also delves into front-end technology and software development, holds a Bachelor's degree in Computer Applications.

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