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.
Agreed, it is very irritating.
To stop it, click the up arrow to the right side of the message when it appears. Then on the page titled “POP and deleting downloaded messages” which is also at Inbox>Options>POP and deleting downloaded messages, select:
“Do what my other program says—if it says to delete messages, then delete them.”