The classic version of Yahoo Mail will soon be discontinued. - At that time, you'll be upgraded to the latest version of Yahoo Mail or basic Mail, depending on your browser's compatibility. Learn more about the latest version of Yahoo Mail at https://upgrade.mail.yahoo.com/.

Can I edit filters in the Yahoo Mail app for iOS?

Fear not, your filters still work in the Yahoo Mail app for iOS. The ability to edit them or add new ones will be back, but for now if you want to edit your existing filters or add new ones you'll need to go to the desktop browser version of Yahoo Mail.