How to merge two Outlook 2010 pst data files?


All replies

  • Easy way: with the one you want to use open in Outlook and the other one not in your profile, go to File, Open, Import.

    If you only want to merge some content, open both pst files in outlook and drag between folders. For calendar, use a list view to see all of the appointments.

    Diane Poremsky [MVP - Outlook]
    Outlook Daily Tips | Outlook & Exchange Solutions Center
    Subscribe to Exchange Messaging Outlook weekly newsletter

    Saturday, June 23, 2012 8:47 PM
  • Thanks! This worked for me.

    Monday, June 25, 2012 5:47 PM
  • I set up my new office 2010 Outlook first and it delivered email from the past few days into the new program. Meanwhile, I put my .pst file from my old computer/outlook into the new outlook folder and renamed the new .pst file (new) when I re-opened 2010 outlook, all my (old) .pst data was there, but none of the new emails.

    I opened the other renamed (new) file, but it was empty? I also tried to import from it, but keep getting a message about "importing to a location that doesn't support Unicode, .... lose multilingual data.... choose location that supports unicode......"

    Sunday, July 21, 2013 6:01 PM
  • Thanks, worked perfectly.
    Tuesday, April 15, 2014 1:03 AM
  • To merge 2 or more than 2 Outlook PST files you can use the SysInfoTools PST merge tool. Or, follow the below manual steps:

    • Launch Microsoft Outlook on your system. Create a new Outlook data file. Click New Items -> More Items and click Outlook Data File.
    • A new window open with the name of Create or Open Outlook Data File. Give a name to this new Outlook data file and click OK.
    • The new Outlook data file or PST will be highlighted in the navigation pane.
    • Now click File tab -> Open -> Import.
    • The Import and Export Wizard will appear. Select Import from another program or file from the list and click Next.
    • Now select file type to import from. Select Outlook Data File (.pst) and click Next.
    • In the Import Outlook Data File window, select the PST file you want to import.
    • Click Browse to locate the file and select it. The selected file will be shown in the edit box. Also, check the box Do not import duplicates and then click Next.
    • Now select the folder to import from.
    • Check the box Include subfolders and Import items into the same folder in. Then click Finish to start the process.
    • The process is being conducted on your system. Please wait until it gets completed.
    Friday, October 23, 2015 12:30 PM
  • I imported my pst file to outlook 2010  and now I have 2 sets of files: inbox, sent, trash etc. I can move my private folders from one data file to the one I want but It does not let me delete the inbox, sent..etc  How can I merge and remove the unwanted folders?
    Friday, May 20, 2016 12:08 AM
  • Kevin,I installed and merged my files using the PST Merge tool and now I have 3 sets of email folder: 1) my outlook pst file from my old system, 2) my new one that it was created when I setup outlook on windows 10 and 3) the new merged of 1&2 PSTs.  To test, I sent myself an email and it showed up in my new pst file (#2).  I only want one set of files. Any other suggestions how I can accomplish this?

    FYI: I moved #1 files to my current pst file (#2) but I can't delete the Inbox, SentItem. etc. from my #1 file.

    Saturday, May 21, 2016 5:12 PM
  • Set pst #2 as the default data file then remove the other pst files from your profile (right click on them and click close in the folder list or remove them in file, account settings, data files). 

    FWIW, all you needed to do was import the other pst files into one pst file to merge them - you didn't need to use any 3rd party programs to accomplish this.

    Diane Poremsky [MVP - Outlook]
    Outlook & Exchange Solutions Center
    Outlook Tips
    Subscribe to Exchange Messaging Outlook weekly newsletter

    Sunday, May 22, 2016 7:22 PM
  • You DO NOT NEED to buy anything. Outlook can import a pst into another for FREE.  File, Open & Import > Select the pst you want to import and choose where and whether to include duplicates.

    Diane Poremsky [MVP - Outlook]
    Outlook & Exchange Solutions Center
    Outlook Tips
    Subscribe to Exchange Messaging Outlook weekly newsletter

    • Proposed as answer by Chance Madden Wednesday, January 04, 2017 6:21 AM
    Tuesday, June 21, 2016 4:03 PM
  • Thank you! Worked perfectly. 
    Tuesday, December 27, 2016 7:11 PM
  • I've tried this and it's not all.

    I'm in a domain environment but still. Import box looks as if its working but nothing appears when complete.

    Folder size doesn't change either....FRUSTRATING!

    Wednesday, January 18, 2017 6:50 PM
  • Can you find any of the imported mail if you search for them? 

    Are you using the option to skip duplicates?
    Did you set a filter in the Import wizard?

    Do you have more than one data file in your profile, if so, are you importing into the correct data file? 
    Importing IMAP data files can screw up views, but the data file and folder sizes should change. 

    Diane Poremsky [MVP - Outlook]
    Outlook & Exchange Solutions Center
    Outlook Tips
    Subscribe to Exchange Messaging Outlook weekly newsletter

    Thursday, January 19, 2017 3:34 PM
  • yes software works to merge multiple outlook pst files. i download this tool from here thanks for your suggestion 
    i merged, its working fine thanks
    Saturday, April 08, 2017 2:49 PM
  • Hi,

    The most easy way is to:

    1. Open both files in Outlook,

    2. Make a special folder in one PST file.

    3. Copy all the contents in the other PST file to that special folder.

    Import will also work. But sometimes it will overwrite existing emails under the same locations. So I prefer to use copy method, which is more safe.

    Good luck!

    Sunday, April 09, 2017 12:26 AM
  • you need to find out a third party utility or open both files in outlook and easily use drag and drop task to combine two files. it will take time so i suggest you to use third party tool. softaken merge pst is better option for this
    Saturday, April 15, 2017 4:53 AM
  • I did this and it worked. Thank you. However, when I first ran Outlook I did not want to set up an email account just then. The window froze and the program reported (Not Responding). When the option was presented to force shutdown or wait, I clicked "force shutdown". Did the program create the primary .pst file with no associated email account? Because now, when I ran Outlook the 2nd time I did set up an email account, and now I have c:/users/ray******/app data/local/Microsoft/Outlook/outlook.pst and the email I set up c:/users/ray******/app data/local/Microsoft/Outlook/Outlookmail.******.com-00000010.pst and the first section shows "Personal Folders" > "Deleted Items"(w/ recycle icon), drafts, inbox, junk etc. all w/ icons, but nothing downloads there. The 2nd section is the email I set up, and "Inbox" is the only folder w/ no icons (under that are the IMAP folders synched w/ the account) and no icons. Since I imported from 3 old hard drives into Outlook.pst and have all my emails and folders back, I need to save a copy of that file somewhere like a flash drive. Do I need to uninstall then reinstall Outlook from the Office CD then copy the saved file into the store folder?
    Saturday, May 06, 2017 2:33 AM
  • There is a manual way by which you can perform the action to merge PST files but it's very lengthy and time taking process. So to avoid such lengthy way to merge PST files into one of Outlook 2010, I recommend using PST Merge Software. This tool is designed to merge multiple Outlook PST files into a single file in just a few mouse clicks. There are no limitations for merging PST files, that is you can select numerous from your system and merge all of them in seconds.
    Tuesday, May 16, 2017 12:46 PM