Can't change my email password after ios18 update

Who is your email provider? And what do you mean by "I can't do this"? Passwords to your email accounts are completely controlled by them, so you may need to contact their technical support for assistance. But if you tell us who your account is with and where and how things are failing, perhaps we can offer suggestions.

Regards.

Absent any details as to how you're trying to change these passwords and where things are failing, I again can only suggest that you contact the providers of your email accounts. Passwords and the changing of them are completely controlled by those providers.

Regards.

I cannot either. I have changed my Yahoo password with Yahoo and the new password is saved on the password app. When I click on the mail Icon the IPhone fills the previous password. I cannot find the path in settings to update.