how to change email of microsoft account

I'm probably being stupid, but any help/advice please? Thanks.

I've set up an ActiveSync account fine but I'm stumped on setting my personal mailbox up. the mail format would be ' whilst the username would be in the format '_someone' - the app appears to assume that mail address and username are going to be the same as when setup is completed the app shows my username as my email address. Likewise if I do it step by step setup from the 'Other account POP, IMAP' link in setup although I can put the email address in this eventually gets overwritten by my username when setup is finished - I have my own domain and my hosts username format is totally different to my email address - e.g. I can't see how to set up 'Other account POP, IMAP' in the Win 10 mail app - or rather I can see how to set up accounts and either the app is faulty or I must be missing something, because I've tried using the advanced settings as recommended in the Ten Forums tutorial on the mail app ( Mail app - Add or Delete Account in Windows 10 - Windows 10 Forums) but I don't see anywhere to put the actual email address for the account I'm trying to set up. At this point, just type any random string of. The next screen prompts you to enter a password for the account. Hi, my first post on the forum - can someone help? At the screen asking for a Microsoft account email address, type aa.com. Apart from the usernames, the Windows operating system also lets you manage the type of your user account, as well as lets you change the Windows profile picture.Mail App - Cannot set up 'Other account POP, IMAP' Hopefully, this article helped you change your Windows accounts name without any hassles. Restart your PC to make sure the changes are applied effectively to your computer. Your username will be changed successfully. However, there can only be one mobile number as a sign-in alias because when you sign in with a mobile number, we need to know which account its for. It also adds an extra layer of security to your Microsoft account. Enter a new username (both first and last name) and click on Save. Adding a mobile number as a sign-in alias enables you to sign in conveniently using your phone number instead of your email.From there, click on the Edit name option. Sign in to your Microsoft account and click on your profile picture.Click on Accounts > Your info > Manage my Microsoft account option from there.Open the Windows Settings (Windows Key + I).You can also alter the account name settings with its help. The Settings lets you tinker with several options on your Windows computer. Change the Windows account name from Settings

How to change email of microsoft account