Remove duplicate email messages from merged .pst (MS Outlook) files

Posted on 2011-10-23
Last Modified: 2012-05-12
Note -- this is one of two threads with the following titles:

   • Merge multiple .pst (MS Outlook) files
   • Remove duplicate email messages from merged .pst (MS Outlook) files.


Does anyone know of an easy way, or some easy-to-use software that will remove duplicate email messages from merged .pst (MS Outlook) files.

I have been using Outlook for many years and during that time I have had a few different computers and a few different external hard drives (which I still have) and numerous different saved .pst files on those hard drives.  Knowing that they contain certain items which I want to save, I have always just stuck them in some folder with the thought that I would get back to them at some point to filter out all the other stuff.  However, despite the years which have transpired, I am still no less confused about .pst files than I was then!  

Therefore, I am hoping that there are enough other people with similar circumstances, that someone, at some point, has developed a really awesome way to do just what I am inquiring about.  If anyone is aware of something like that, I would be very happy (and appreciative) to hear about it.

Question by:Steve_Brady
    LVL 89

    Expert Comment

    by:John Hurst
    Try the following program. It does what you want and is very inexpensive (albeit, not free):

    .... Thinkpads_User
    LVL 24

    Expert Comment

    check this for once off job
    LVL 77

    Expert Comment

    by:David Johnson, CD, MVP
    I use mapilab duplicate email remover for outlook. (not free but reasonable)
    LVL 13

    Expert Comment

    by:Alexei Kuznetsov
    There is a free Remove Duplicate Messages utility. Works flawless!
    LVL 13

    Accepted Solution

    Sorry, my previous comment was about Mark Duplicate Messages tool (which is also usefuly free by the way). Correct Remove Duplicate Messages location.

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