Yesterday, I changed my Apple Id from Gmail to Outlook. I have already removed my Gmail account from my iPhone. I am also forwarding all of my Gmail emails to my Outlook account. I setup my Outlook account on my iPhone under the Outlook.com option but I am experiencing a few issues issues. I can see the new email notification and when I open the native mail app I can even see the new email for a few seconds. Then, the iPhone checks for emails, downloads them, displays updated, and then the emails disappear. Then the cycle repeats over and over. Any ideas? It does the same thing on my iPad.