If some project workgroup members don’t have Microsoft Project on their computers, that’s OK. If everyone has a MAPI-compliant, 32-bit e-mail system, they can still send and receive workgroup messages. Running WGsetup.exe on their computers will let those workgroup members without Microsoft Project benefit from its messaging capabilities.
To make an e-mail system receptive to workgroup messages
Alternatively, the workgroup manager can copy WGsetup.exe from the Microsoft Project for Windows CD to a network directory or folder that workgroup members can access. The workgroup members can then install WGsetup.exe from the network.