I have acome one intresting fact:

The Formativ statements CurrentItem.To_, CurrentItem.CC and CurrentItem.BC do actually do a full address book resolution.

Thats how I detected this:

1. Add simple code to an ‘before OnSend’ applet

Sub Main(Client, GWEvent)
Set Msg = GroupWise.ComposingItem
If Msg.To_ & Msg.CC & Msg.BC = “” Then Exit Sub ‘ No recipients
… your code here…
Exit Sub

2. Create a new message with only INVALID address (e.g. asdfg) in the To line and press send. You will get an address resolution error dialog!

Unfortunately there is no way of retrieving the just resolved addresses… any chances to implement this in a future version of formativ?