Hi Hemdatt Sharma
Thank you for reaching out to Microsoft Q&A Forum. I understand how worrying it is to suddenly lose older Sent emails, especially ones from before October 10, 2025. I’ll do my best to help you check all possible places where these messages may still be recoverable.
Please also make sure that you've tried the suggestions in Q&A Assist above. To narrow this down, please sign in directly at Outlook on the web, and check the following folders:
1. Deleted Items
Sometimes Sent messages may move here due to sync issues or Outlook rules.
- Go to Deleted Items
- Check if any of your earlier Sent emails appear there
2. Recoverable Items
If the emails were deleted recently, they might still be recoverable:
- Go to Deleted Items folder
- Select Recover items deleted from this folder at the top (This restores messages still available on Microsoft’s retention system)
3. Archive folder
Some devices or apps may auto‑archive older emails. Please check Archive to see if the missing Sent items were moved there.
4. Confirm if you can see these Sent emails in Outlook on the web
Please tell me:
- Do any Sent emails before October 2025 appear when viewed only on the web?
- Or are they missing across all devices including web?
For more details, you can see this official guide: View sent email - Microsoft Support
Please feel free to let me know how it goes. Thank you for your understanding and patience.
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