Below are a few steps to troubleshoot why emails may not be appearing in Outlook for Exchange sent items folder:

1. Check that you have the correct email account configured in Outlook.
2. Close and reopen Outlook.
3. Check the Sent Items Folder in Outlook is selected and updated.
4. Check that you have enough storage space in your account.

If you have verified all of the above and still don’t see the emails in your sent items folder, please contact your email service provider for further assistance.