Posted by: kurtsh | July 14, 2008

DOWNLOAD: Thread Compressor for Outlook… works with 2007!

outlook1 There’s a rather ancient tool out there called “Thread Compressor” for Outlook that allows you to automatically select a folder and rifle through all the running conversation threads, deleting all the middle discussion messages while keeping only the last response that contains the content of all the other previous replies.


There’s an old article about it here:

The author was Ewan Dalton. He’s a friend of mine from the old days when I did Mobility and he’s got an explanation on how to make it work with Outlook 2007.

“Functionally, the v4 version does pretty much everything the v5 one does (except for UI tidy up and the likes), as long as you make sure you’ve got the required VB6 controls installed on your machine, and have downloaded CDO 1.21 to install into Office (since CDO is no longer part of the Office setup).”

The instructions for installing the DLL are pretty easy:

  • Right-click on this link and choose Save… then copy the DLL to your PC, under some directory where you can easily find it again and somewhere it won’t get easily deleted (ie don’t just put it on your desktop). I’d suggest C:Documents and SettingsusernameApplication DataMicrosoftAddins (that’s assuming you’re using Windows 2000 and it’s installed on your C: drive…). This is the default folder where Outlook expects Addins to be, so it’s as good a place as any.
  • In Outlook, go to Tools, Options, click Other, then Advanced Options and then press the COM Addins button.
  • Now select Add, and browse for the DLL you put on your machine and select it… bingo, you should have the Addin now loaded.

System Requirements
There are a few basic requirements:

  • You must be running Outlook 2000, 2002, Office Outlook 2003, 2007
  • You must have Collaboration Data Objects installed on your machine – if you get an error when you try to use the Addin saying that it couldn’t create an ActiveX object, you don’t have CDO installed.
  • To install CDO, run the Office 200x setup, choose Add or Remove Features, and look under Microsoft Outlook for Windows. Check that Collaboration Data Objects is set to run from this computer… the installation default is "Not Available".
  • There are various controls used in this new version which might not already be on your machine:
    • TABCTL32.OCX
    • COMDLG32.OCX


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