I think where it gets muddy is multiple people working on and/or using the account on company time. If maintaining the account, updating contacts, etc was part

I think where it gets muddy is multiple people working on and/or using the account on company time. If maintaining the account, updating contacts, etc was part of their regular job, this argument starts to make sense. That would be online with working on side projects on the job or with company resources. If it was a "I'm too busy, here.. log in and grab his email" sort of thing, that seems more in line with the "you can use my phone" analogy. Either way, I'm interested to see what their argument is and how it shakes out as this could impact quite a few other things.