App Passwords can be used to help protect your main account password. When entering your password in to other devices or software, such as Outlook or Windows Mail you can use a specific password just for that app. If that password becomes compromised you can just delete it and create a new one. Even better is that the password cannot be used to access webmail and so they will not be able to change any of your account details and take over your account. This is an added layer of protection for you as webmail access has complete control over your account and so the webmail password must be protected.
You can configure up to 4 individual passwords to be used with apps, such as Outlook, your mobile phone and your tablet, etc.
To do this, login to webmail with your normal password
You can delete the password by clicking the Minus Sign next to the relevant password.
NB: