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Next you'll need to enter your password and click "Sign-in".
You'll then be prompted with a Windows 10 security screen asking to make your PC more secure. Clicking on "Enforce these policies" is required to configure the account.
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Select your account and enjoy.
Deleting Your Account from the Windows 10 Mail App
Step 1: In the Mail App Open the Settings Menu
Open the Windows 10 Mail app and enter your account. You'll want to select the settings button which will be a small gear symbol at the bottom of the screen.
Step 2: Select Your Account
In the settings menu select "Accounts".
Next, select the account you wish to delete from the list of synced accounts.
Step 3: Delete the Account
Once you are on the account management page, select "Delete account".
You'll need to click the "Delete" button at the bottom of the next prompt to verify that this is the action you'd like to take.
Next you'll be prompted with a Windows 10 security screen asking to make your PC more secure. Clicking on "Enforce these policies" is required to delete the account.
Your account is now deleted from the Windows 10 mail app.