Hi @Vusumuzi Ngcobo
Thank you for posting your question in the Microsoft Q&A forum.
To help narrow down the issue, could you share a bit more detail:
-Are you signing in with a personal Microsoft account (e.g. @outlook.com, @hotmail.com) or a work/school account?
-What type of account is configured in Outlook (POP, IMAP, or Exchange)?
-Have you tested Outlook on the web, and do Sent Items appear correctly there?
Here are some steps you may try:
1.Check for active filters
-Open the Sent Items folder.
-On the ribbon: View > View Settings > Filter…
-Review all tabs (Messages, More Choices, Advanced).
-If any filters are set (especially date filters), select Clear All.
-Close and reopen Outlook.
2.Reset the view
-Go to Sent Items
-On the ribbon, View > Reset View
If still incorrect:
-Open Run (Win + R), type: outlook.exe /cleanviews. This resets all custom views.
3.Verify sync settings (Exchange/Microsoft 365 accounts)
If the mailbox is cached locally, Outlook may only sync recent items.
-Go to File > Account Settings > Account Settings > Select the account > Change...
-Adjust the Mail to keep offline slider to All.
-Restart Outlook.
Please know that while our initial response might not resolve the issue right away, your input is incredibly valuable. With a bit more detail, we’ll work together to find the best solution for you.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.