Question about Outlook Express

I have other mail programmes that take email in my Hotmail account to display on other devices. Just recently, Microsoft have obviously updated that functionality and now force a POP folder in the Deleted folder of Hotmail. This is designed to keep any emails that have been used by another email service. A warning dropdown now displays at the top of the Hotmail page every time it is opened saying "Your Messages Are In Your POP Folder" with an option of making changes to how the 3rd party email service is able to interact with Hotmail.

There is no obvious way of stopping this annoying dropdown showing each time hotmail is run.