If you can send emails successfully and see new messages in your inbox, but cannot see the additional subfolders, you most likely have an incorrect IMAP path prefix setting on the device.
To fix this, follow these steps:
- Go to Settings > Mail > Accounts > Select your email address > Account > Advanced
- At the bottom of this screen, you should see "IMAP Path Prefix". Leave it blank or try entering "INBOX".
- Save the changes, and then navigate back through the email account settings pages, saving as needed.
You should now be able to see all the folders in the account. If this does not fix the problem, or if it is already set up that way, you may need to delete and re-add the email account on your device.
