Helping people with computers... one answer at a time.
It's possible to set Outlook Express up with no Accounts menu item. I can only speculate on why that functionality exists.
I have no "Accounts..." menu item in Outlook Express. Why?
This took a little bit more than the usual head-scratching. After all was said and done, I came to find this: How to Remove the Accounts Option from the Tools Menu in Outlook Express. The exact oposite of the situation at hand. It turns out that there's a registry value that can be set to remove the "Accounts..." menu in Outlook Express. We set the value of that key to zero and the menu item returned.
The question we're left with is "Why?". Why didn't a clean install of Outlook Express reset the value?
My guess is that this particular setting is intended for situations such as corporations with strict internal email policies - the kind of company that insists you use company email for company business only. In an attempt to enforce that, disabling the accounts menu prevents employees from setting up additional non-work related accounts.
If that's the case, then it's fairly important that any install or re-install of the software not override the setting. Otherwise employees could easily circumvent the intended restriction.
Anyway, that's all speculation on my part. I could be wrong.