Can you confirm that zimlets doesn't works in popup ?
For example if I use com_zimbra_sforce it doesn't add the button "Send & Add"
If I double click con a message opening it in new window the com_zimbra email
and com_zimbra_date doesn't works.

I suppose this is bu design but is a problem for zimlets working
on outgoing messages.

Is there aany RFE open ?

Thank you