Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi,
Who is the email provider for the account?
Did you check the Deleted Items folder?
Recover and restore deleted items in Outlook
https://support.microsoft.com/en-us/outlook/mail/recover-and-restore-deleted-items-in-outlook
If you can't find an item in the Deleted Items folder, the next place to look is the Recoverable Items folder. This is a hidden folder, and it's the place where items are moved when you do one of the following things:
Delete an item from the Deleted Items folder.
Empty the Deleted Items folder.
Permanently delete an item from the Inbox or from another folder by selecting it and pressing Shift+Delete.
- Make sure you are online and connected to the mail server.
- In classic Outlook, go to your email folder list, and then select Deleted Items. Important If you don't see the Deleted Items folder, but instead see the Trash folder, your account doesn't support recovering an item that's no longer in your Deleted Items folder.
- On the Home tab, select Recover Deleted Items From Server.
I look forward to hearing from you to get the results of the troubleshooting.