On newly installed Win 10, both in Edge and IE, the password of my email was asked. Why?

[WPCentral Question]

on newly installed Win 10, both in Edge and IE, the password of my email was asked

ok so I am paranoid. I don,t want Win 10 storing my Password to my email account. And it does not provide me with an opt-out. How can I defeat the obtrusiveness of Win 10? Help. Thank you in advance.
P.S. Oh this happens when I want to link the "Mail" in Win 10 with my email accnt in Yahoo.

 

[eusty]

Re: on newly installed Win 10, both in Edge and IE, the password of my email was asked

Well how can the mail app retrieve your emails without a password?

I'm not sure if there is an option to enter it every time, but if there's not then check your email via the Yahoo website.