Thanks for reaching out to the Microsoft Q&A Forum. I understand how concerning it is when emails you intentionally saved into folders suddenly go missing, and I’ll do my best to help point you in the right direction.
Please sign in to Outlook on the web via https://outlook.live.comand please check:
1, Deleted Items & Recoverable items
- Open Deleted Items.
- At the top of the list, select "Recover items deleted from this folder"
- If the emails were removed within the last 30 days, they may still be restorable here.
2, Check if messages were moved by rules
- Go to Settings > Mail > Rules
- Review any rules that move, archive, or delete messages automatically.
- Temporarily disable rules and check whether the folders or emails reappear.
3, Verify the folder list isn’t hidden
- In the left pane, select Folders > Expand all.
- Scroll down and check under Other folders, Archive, or Conversation History.
4, Reset your mailbox view
- Go to Settings > Mail > Layout.
- Reset the folder pane and message list to default, then refresh the page.
5, Confirm the correct account is signed in
- If this is a Microsoft Family account and you are the parent, please ensure you are signed into the correct mailbox (some parents manage multiple accounts).
- Switching between aliases can also make folders appear “missing” if the mailbox view changes.
If the emails are not in Deleted Items or Recoverable items, they may already be permanently removed from the Outlook.com server. Unfortunately, once the retention window has passed, recovery is no longer possible from the web mailbox.
Thank you so much for your time and understanding.
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