(Topic might be better placed in a different board)
(I have no Microsoft account so asking here and not on Microsoft website)
I am trying to understand Microsoft account and Outlook account.
I know someone who has a Microsoft account, but does not use it, and does not know how - I am only slightly more knowledgable. That person has an email registered with the Microsoft account but the email is from a popular email service provider. Also the person obviously also has a password for the Microsoft account. The person is registered for the account with a FirstName and a LastName (I'm not telling the person's name here).
So regardless of that person knowing or not, the person can visit login.live.com, and sign in with the non-microsost email address, and the microsoft password. THEN, on the main signed-in page, there is a person icon of very generic looking kind, and this can show an "Account" button or link. On that page, there is a little link on the left side, "View email". Clicking this opens what looks like a normal email webpage, and there can be found several expected features of an email interface page. When or if this person uses this page to write and send an email, the recipient could soon be able to read the sent message.
So now upon the recipeint checking the message, it is shown as sent FROM, the non-microsoft email address with which the M.S. account holder used for registering their M.S. account. This is NOT any of @live, or @msn, or @hotmail, or @outlook.com
This then appears to show that this MS account holder does NOT have an Email account with Microsoft. If the previously described recipient were to reply to the email sent from the MS account holder, the email does not go to any Microsoft email account; but goes TO the email account with which the MS holder used in registering the MS account.
Again, this looks like one can register for a MS account but not have an MS email account (such as Outlook.com). If one wants to one can also register for an Outlook Email account, and attach this to the Microsoft account.
Something not clear is, does the MS account holder without also an MS-email account, have a MS username or not?
Please help fill in any details I am missing.