PLEASE READ: Important information regarding “POP3”:

“POP3” downloads email from a server to a single computer or device, then deletes it from the server. Because your messages get downloaded to a single computer or device and then deleted from the server, it can appear that mail is missing or disappearing from your Inbox if you try to check your mail from a different computer or device.

It is highly recommended if possible that you configure your device with “IMAP”, instructions for “IMAP" setup can be found under Email > IMAP in the Book Navigation menu on the IT Knowledge Base site.