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

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.

1 Solution
John HurstBusiness Consultant (Owner)Commented:
Try the following program. It does what you want and is very inexpensive (albeit, not free):


.... Thinkpads_User
MASTechnical Department HeadCommented:
check this for once off job
David Johnson, CD, MVPOwnerCommented:
I use mapilab duplicate email remover for outlook. (not free but reasonable)
Alexei Kuznetsov (Outlook MVP)CEOCommented:
There is a free Remove Duplicate Messages utility. Works flawless!
Alexei Kuznetsov (Outlook MVP)CEOCommented:
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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