Can't set email up as IMAP on iphone & ipad only POP3
I've had to delete and re-install my email on iphone and ipad (it is a BT email address) but it doesn't give me the option to set it up as a IMAP email and automatically does it as a POP3. I can't see how to change this (always have been able to before) and I now have over 3000 emails because it hasn't synced then as read, deleted etc. Any ideas what I am doing wrong. My iphone is on iOS 16.4.1 and Ipas is 16.3.1
iPhone 8 Plus