Re: Solution is controversial but saves money
I take it you have never had to deal with users who have only ever used Outlook.
Change from Outlook and very likely the directors will want to skin you alive.
Back when we ran Lotus Domino/Notes it took very little for management to go "I want Outlook" and out the door it went (Me with it for several months, also not helped I might add by IBM demanding like for like licensing costs when only email was used and they had the cheek to audit us!).
Personally I am fine with any webmail client, its just email at the end of the day.