apple email passwords
how do you change iCloud mail passwords
iPhone 13 Pro, iOS 15
Question marked as
When Apple ID is signed in the iPhone the mail accounts will be configured Add an email account to your iPhone, iPad, or iPod touch - Apple Support
So the Apple ID password has to be changed Change your Apple ID password - Apple Support
However , those accounts if set with yahoo , gmail the passwords can be changed from web account https://support.google.com/mail/answer/41078?hl=en&co=GENIE.Platform%3DDesktop