Emails iPhone 14 Pro
Got a new iphone 14 Pro after having iPhone 5SE for years. Since having the new phone, some emails are being received and some aren’t. They are not in my sent box either, but I’ve definitely sent it. It can’t be to do with the recipient as that person may have received 2 emails from me but not the other 2. I only have 1 iCloud email account on my phone. Any help with a fix please?
iPhone 14 Pro, iOS 16