- Have you configured IMAP or POP3? IMAP is short for Internet Message Access Protocol. With IMAP, the message does not remain on the local device, such as a computer, it remains on the server. POP3 is short for Post Office Protocol. With POP3 mail, it will connect and attempt to keep the mail located on the local device (computer or mobile)
- Are you using any third party mail app or iOS mail app?
- Have you set any Rule on your email client server to move mails on arrival.
If your incoming email messages are automatically moved or placed in Bin / Trash / Junk / Archicve, the primary cause could be misconfigured rule / filter, or a setting on your Forwarding and POP/IMAP tab. To resolve this issue, please make sure you haven't created any rule / filters with the action to Delete / Move it that would affect the email messages being moved automatically to another folder..
- Is this your corporate iPhone? Then please contact the system administrator of your corporate
- If it is your personal device, in that case, do you have any profile installed by your corporate/organisation/enterprise/School Management?
- Erase the profile added by you If you have installed a profile on your own --> Install or remove configuration profiles on iPhone - Apple ...
- Or please contact the system administrator of the organisation who provided the profile to you