You have to use either OAuth or a secure mail key to get your email through an app.
|Device & operating system (OS)||Apps and programs that use OAuth|
|iPhones® & iPads® running iOS 9.0 and above|
|Android devices running Lollipop/5.0 or above|
|Mac computer running OS 10.11/El Capitan or above||Apple Mail|
|PC running Windows 10||Windows® Mail|
|Email app not listed?|
Here’s a quick way to find out if your email app uses OAuth. Start setting up a new email account in your app. Your app may offer you a list of email providers that includes Yahoo. If it does, your email app is OAuth compatible. Be sure to select Yahoo as your provider. You’re all set!