Index: gnome-control-center-2.24.0.1/capplets/default-applications/gnome-default-applications.xml.in
===================================================================
--- gnome-control-center-2.24.0.1.orig/capplets/default-applications/gnome-default-applications.xml.in
+++ gnome-control-center-2.24.0.1/capplets/default-applications/gnome-default-applications.xml.in
@@ -241,6 +241,13 @@
       <icon-name>sylpheed</icon-name>
       <run-in-terminal>false</run-in-terminal>
     </mail-reader>
+    <mail-reader>
+      <_name>GroupWise</_name>
+      <executable>groupwise</executable>
+      <command>groupwise %s</command>
+      <icon-name>gwclient</icon-name>
+      <run-in-terminal>false</run-in-terminal>
+    </mail-reader>
   </mail-readers>
 
   <terminals>