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I'm trying your TB Add-on but I got problem; after I instelled it hide the preview message tool bar.. so now I can't see button for quick reply and so on..
Can you help me !?

Questa recensione riguarda una versione precedente (0.8.7) del componente aggiuntivo. 

This seems to be caused by a conflict between Mail Redirect and Reply Monitor add-on. I'll try to find out if it can be fixed on my side, or better in Reply Monitor.