MSMail aka Workgroup Post Office (WGPO) is not supported on Outlook 2002 and 2003.
But it can be made to work. As always it's in an unsupported mode.
If you are using Outlook 2010 and its not working, read this message at at Outlook Forums.
Now available – an installer for Outlook 2003! This is for Outlook 2003 only – use the other one for Outlook 2002. If you only need the WGPO files, use the Outlook 2002 version. Thanks to Ken Slovak for creating the installer file for me. (Please do not contact him for assistance – he doesn't know anything about MS Mail, he made the installer file as a favor for me.)
What this installer does:
- Makes the changes needed to the mapisvc.inf file (see below).
- Installs MSFSMENU.ECF and MSFSPROP.ECF to C:\Program Files\Microsoft Office\OFFICE11\ADDINS
- Installs the post office administration files (wgpo*.*) to Windows\system32. (Delete them if you don't want users to see them in control panel.
- Installs MSFS32.DLL to Windows\system32
- Adds the ability to uninstall from Add/Remove programs
Everything seems to work perfectly when you upgrade over a previous version of Outlook, however when doing a clean install the MS Mail address book returns an object not found error when resolving addresses against it. You can work around this one of two ways.
- By adding the other members of your post office to your contacts folder. Replying to mail works fine as do addresses in the autocomplete cache – you just can't use the MS Mail address book to resolve addresses.
- Create a new *.pst using Outlook 97/2002 format. Using the new Unicode format appears to cause the error.
To easily add the contents of the address book to your Contacts folder, open the Address book to the Postoffice address book. Select all names and right click, then choose Add to Contacts. You can now send mail to your MSMail address list.
To make a new pst, open the profile dialog (from Outlook use Tools, E-mail Accounts, View or change existing email accounts or access it from Control Panel, Mail). Select New Outlook Data file at the bottom of the screen and create a new one using Outlook97/2002 format, then set it as the default delivery location. You'll need to restart Outlook for the change to take effect.
You may need to restart Outlook to see mail in newly created shared folders.
If you want to install MSMail yourself, do the following:
1. MSFS=Microsoft Mail
to the [Services] section of
C:\Program Files\Common Files\System\MSMAPI103\3mapisvc.inf
2. Add this to the end of mapisvc.inf (watch for broken lines – each line begins with PR_, except the last 3):
PR_DISPLAY_NAME=Microsoft Mail Address Book
PR_PROVIDER_DISPLAY=Microsoft Mail Address Book
PR_DISPLAY_NAME=Microsoft Mail Shared Folders
PR_PROVIDER_DISPLAY=Microsoft Mail Shared Folders
PR_DISPLAY_NAME=Microsoft Mail Transport
PR_PROVIDER_DISPLAY=Microsoft Mail Transport
Providers=SFS_AB, SFS_MS, SFS_XP
3. Add MSFS32.DLL to
You will also need two ecf's, MSFSMENU.ECF and MSFSPROP.ECF placed in C:\Program Files\Microsoft Office\OFFICE11\ADDINS
if you need the post office files, use the installer for Outlook 2002 and only install the Post office files.
Restart Outlook and possibly the computer.
Published January 14, 2011. Last updated on April 22, 2018.