Ok, multi quote isnt working well for me, so ill answer from memory:
Most accounts are innactive because in theory everyone in the NHS should have one, and they should be listed on the NHSmail Directory, but this does not mean they use it as a main account. Most NHS organisations have their own Exchange or other solution with an nhs.uk address. I worked for Devon PCT and we were the first county in the country to roll out NHSmail fully to all GP practices. HQ and locality buildings are still using a mix. Thats why a lot of accounts are empty.
NHSmail inboxes are 200mb atm, but there is the option to quota them between 50 and 500.
The email system is encrypted and eventually will be used for electronic transmission of all sorts of patient information. It must be secure and resilient, somethign is currently isnt.
Wasting money in the NHS is nothing new
The people in charge dont know what they are doing. Often when rolling out NHSmail in GP practices we would phone them to tell them which servers were down, they wouldnt have noticed themselves (the system is administered by Cable and Wireless).
They have set a target of continued continuity, but there is a major issue as far as I can see. All users currently using Outlook for NHSmail are using IMAP, which as far as I know, doesnt work with a link to an exchange? I assume there will be some 'link' server in the middle to avoid having to reconfigure every machine (Devon PCT, 107 practices, average 30 users a practice, average 20 machines, often a users on many machines = a LOT!)
NHSmail is crud, very crud, but I dont think this will fix it.
Most NHSmail projects are late, under performing, or just simply buggered.
A shiny new forum... cool!