Transfer email to new phone
New iPhone 16e. Old emails transferred but all new mail going to old phone and not new one
iPad, iPadOS 18
Are you wanting to use the old iPhone?
If not then , then go to settings >General > Transfer or Reset iPhone.
If you are then both should be able to receive emails. If you don't want the old one to receive email delete the email account in Mail. Settings >Apps >Mail > Mail Accounts and tap on the email account that you want to get rid of and delete it.