How to Import OLM Data of Mac Outlook into Windows Outlook?

olm to pst converterMicrosoft provides its Outlook application not only for Windows system, but also for Mac or Macintosh machine. Microsoft Office Outlook 2011 for Mac is similar to the Windows MS Outlook program. The only difference between them is the data file which are used by these programs to store mailbox data. You are familiar with PST or personal storage table, an Outlook data file of Windows Outlook. But do you know that in which format does Mac Outlook store mailbox data?

It is OLM (Outlook for Mac) file in which your mailbox data are stored by Mac Outlook.

But remember one thing, you cannot open an OLM file in any version of Windows Outlook as Windows Outlook only understands PST format. Even you should not try to import the files manually if you do not have sound knowledge. Importing the OLM files to Windows Outlook in a wrong way may cause corruption in the OLM files. In this blog you will come to know how to import an OLM file to Windows Outlook in a safe manner, i.e. without causing any damage or data loss.

Before I let you know the way of importing an OLM file to Windows Outlook, I would like to tell you the reasons behind this need. I mean why you need to import an OLM file to Windows Outlook.

  • You were using Mac Outlook in your past, but now you need to use Windows Outlook. You need to use the OLM files in your Windows Outlook. What will you do?
  • Or, You receive an OLM file from your friend or a client. You are unable to view the content and information of the file as you are a Windows Outlook user.

There might any scenario in which you need to import your OLM files into Windows Outlook. To preform such action, first you need to setup an IMAP (Internet Message Access Protocol) mail account by using which you can transfer Mac Outlook emails to Windows Outlook.

How to setup an IMAP mail account?

It is very simple to create or setup an IMAP mail account, i.e. you will be done within 4 easy steps. Gmail would be an ideal option for creating or setting up an IMAP mail account. So you start this process with creation of an email account in Gmail. Once the account is created, just log into it and follow the steps given below:

  1. Click on the Gear button which you will see on the top at the right side.
  2. A list will be scrolled down. Click on Settings to go to the settings page.
  3. At the settings page, click on Forwarding and POP/IMAP tab on the top.
  4. Check your IMAP status. If it is disabled, do enable it and click on Save Changes button.

Your IMAP mail account is created successfully. Now you need to setup Mac Outlook with your IMAP mail account. Follow the steps given below to do this action:

  1. Open Mac Outlook. On the menu, go to Tools > Accounts.
  2. You will go the accounts page. Click on Email.
  3. Now you need to enter your account information. Type your Email address, Password and other information. Click on Add Account button.
  4. The IMAP mail account will be added successfully and you will see your IMAP mail account listed on the Mail tab.

After this, you need to create a Gmail label to synchronize it to the Mac Outlook. To do this, just follow the steps given below:

  1. Log into your Gmail account.
  2. Click on the Gear button which you will see on the top at the right side.
  3. A list will be scrolled down. Click on Settings to go to the settings page.
  4. At the settings page, click on Labels tab on the top.
  5. You need to create a new label. To do this, click on Create new label button. Note: Make sure the label should be shown and the Show in IMAP box is checked.
  6. Right after this, you need to go to your Mac Outlook and update the IMAP mailbox by clicking on the Send/Receive button.
How to move emails from Mac Outlook to IMAP mailbox?

It is the main part of this process in which your emails and other mailbox data of an OLM file will be moved or transferred to your IMAP mailbox. Follow the steps shown below:

  1. Open Mac Outlook.
  2. Right click on any mailbox item that you want to move. Click on Move > Copy to Folder.
  3. Now type the name of your IMAP folder and click on Copy.
  4. After copying the selected mailbox data to IMAP mailbox, you need to update your Mac Outlook IMAP folder by clicking Send/Receive button. Or you may also update it by refreshing the folder on Gmail.
  5. Now you can see all the copied emails or other mailbox data have been synchronized to the IMAP mailbox folder.

Now you need to move all the emails or other mailbox data from the IMAP mailbox folder to Windows Outlook. You need to setup the very same IMAP mail account to the Windows Outlook. Now drag your IMAP mailbox folder data to your Windows Outlook Inbox Folder.

Few drawbacks of this manual solution: 

  • Little risky (take backup of your OLM files before using this solution),
  • Time-consuming,
  • Requires a sound technical knowledge,
  • Ineffective if OLM files are corrupted, etc.

These are some drawbacks which can be found in this manual solution of importing OLM data from Mac Outlook to Windows Outlook. There is one of more solution for such purpose, and it is a 3rd party OLM to PST Converter tool.

SysInfoTools OLM to PST Converter can help you perform conversion of OLM files of Mac Outlook into Windows Outlook PST format. It can handle corrupted OLM files too and convert them into PST and other popular email formats, such as: MSG, EML and MBOX.

Some key features of the software:

  • Effective conversion of OLM files in a safe-manner,
  • Supports conversion of corrupted OLM files,
  • Hardly takes a couple of minutes for file conversion,
  • Easy-to-use application, i.e. requires no technical knowledge, etc. 

To know more about this software, please visit SysInfoTools’ website and download the free demo version of this software.

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11 thoughts on “How to Import OLM Data of Mac Outlook into Windows Outlook?

  1. JACOB April 7, 2014 at 4:04 am Reply

    It is truly a nice and helpful piece of info. I am happy that you shared this helpful info with us. Please stay us informed like this. Thanks for sharing.

  2. Bruno May 29, 2014 at 2:13 pm Reply

    Thank you very much for this guide!
    One question though, if I now remove the Gmail-account from the Outlook on Mac, will it remove the labels in Gmail? Should I toggle ‘Show in IMAP’ before doing so?

    I’m sorry I’m new to this, help is much appreciated!

    Thanks in advance!

  3. 1wonkeydonkey August 22, 2014 at 9:59 pm Reply

    Any ideas on how I get contacts and calendar items from Outlook for Mac 2011 (running on Mac Book Air) into gmail? It won’t sync with i cal and contacts?

  4. Mateo October 27, 2014 at 5:12 pm Reply

    Many thanks for this… Unfortunately It doesn’t work at step “Move > Copy to Folder”.
    Outlook never finds the target folder to copy data into… :-(
    Any idea ?

  5. Andrew November 16, 2014 at 11:12 pm Reply

    Thank you very much. Your instructions were clear and easy to follow. Everything worked first time. Your blog is now my go-to sight for fixing data recovery & email management issues.

  6. Alva Christeen November 24, 2014 at 9:28 am Reply


    Nice post generally I use OLM to PST converter in order to Import OLM Data of Mac Outlook into Windows Outlook.

  7. Angelica February 10, 2015 at 5:42 pm Reply

    What can I do if I have already the OLM files as a backup in the hard drive? I don’t have access to the Mac outlook anymore.

    • natsem February 27, 2015 at 5:51 am Reply

      Dear Angelica, it would be difficult if you don’t have access to the Mac Outlook now. To perform the manual trick, you must have access to your Outlook for Mac. If it wouldn’t be possible to get re-access to the Mac Outlook, then you can try the third-party OLM to PST Converter tool mentioned in the post. Or give me some time to work on your issue.


  8. Prashant March 26, 2015 at 1:01 pm Reply

    Hi, Any luck on your last comment, I also have the same situation of not having access to Mac Outlook and have the files stored on my hard drive.


    • natsem March 31, 2015 at 9:37 am Reply

      Dear Prashant, if you are not having access to your Outlook for Mac but OLM files are still there in your hard disk drive, you have better chance to convert them into Outlook PST format using the advanced OLM to PST Converter tool mentioned in the blog post. Try it one.


  9. Vik May 1, 2015 at 2:02 pm Reply

    Thanks for the steps.. Worked like magic ;-) . Just wanted to add that when creating an email for Gmail, you need to make sure Less secure apps option is turned on. I actually got an email that asked if I wanted to access less secure apps. So keep an eye on your email in case, the outlook authentication for email fails.

    Hope this helps!

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