I backed up everything on my IPhone 7 then restored to my new iPhone XS everything transferred fine except all my emails. I had 1200 emails in my inbox but it only transferred about 150 of them. How do I retrieve the remaining? I still have them on my old phone
Depends on what program you are using for your email and how you setup the mailbox. Some setups keep the mail on the server, some download it then delete it from the server. If your email is on the server still, you may just need to adjust the number of days the phone syncs emails.