Kmail/Configuring Kmail/Accounts/Office 365
Office 365 is Microsoft's online office suite which includes an Email service. Traditionally one would access it with Microsoft Outlook locally or on in the web browser.
KMail has two methods of accessing Office 365.
Be aware, sometimes this doesn't work at all and you keep getting an authentication error.
In your Outlook settings search for IMAP or POP to find the servers and settings you need to use.
Most likely they will look like
For your username enter your full email address and then enter your password.