Is this email setup possible??

How many email accounts are allowed under the plan? Each account can have its own password.

Better yet, how about getting your daughter a Gmail account? This way her email is independent of her mother-in-law's account and when they move to their own dwelling in the future, her email account can go with her. If the account is tied to the MIL's account, this would not be possible.

Just a thought.

 

Then all that should be required is to login in to the ISP through the main account and setup the other email accounts.

Again, when they move to a different location, that email account will be lost to your daughter as it belongs to the ISP and the main user, in this case the Mother-in-Law.

 

I'd highly recommend the Gmail route, as mentioned by TonyK. There is absolutely no reason to use an email service tied to a particular location and internet service provider. It also generally works far better than the Bellsouth accounts, with which I have helped many people troubleshoot issues that should never have come up.

jW