" Are you using Apple Mail in both devices? Are both devices up to date? iOS, apps. Have you verified your mail account IMAP settings? POP? Are they the same? Are you using an email client? Have you done a complete power off / on for both devices?...
I use a Sympatico email account as my main email identify. I have set up this account on my Apple iPhone and on my Apple iPad. Both devices can receive and send emails succesfully. However, changes made on one device e.g. delete an email are not s...