If you do not already have a message retention application to use with GroupWise, you have two options:
Purchase an application from a GroupWise partner.
For information about GroupWise partners that provide message (email) retention applications, see the Partner Product Guide.
Develop your own application.
For information about developing a message retention application, see the GroupWise Object API and GroupWise Trusted Application API documentation at the GroupWise for Software Developers website.