How to Obtain Old Emails

For Outlook/Outlook.com, recovery is only possible if the data or account still exists in some form. Based on the provided information, use these options:

1. Check if the Outlook.com/Microsoft account still exists and is active

• If the mailbox has not been signed into for at least one year, Microsoft closes the Outlook.com mailbox and deletes all email.
• If the Microsoft account itself has not been signed into for at least two years, the account and associated services are closed.
• Once an account/mailbox has been closed for inactivity, email content and the address cannot be restored or reused.

2. Check Deleted Items and Recoverable Items (if the account is still active) If the Outlook.com mailbox is still active and the messages were only deleted (not lost due to account closure):
3. Sign in to Outlook.com on a PC or Mac.
4. In the left pane, open Deleted Items.
5. If the messages are not there, at the top of the message list select Recover items deleted from this folder.
6. Select the items to restore and choose Restore. Items go back to their original folders when possible; otherwise, messages go to Inbox.

Note: Items permanently removed from Deleted Items or Junk Email, or beyond the service’s retention period, cannot be recovered.

3. Search and archive behavior in classic Outlook (desktop) If classic Outlook for Windows was used with a POP/IMAP or Microsoft 365 account, older emails may still be in local data files:
4. Look for .pst files in typical locations such as C:\Users<username>\Documents\Outlook Files\ or C:\Users<username>\AppData\Local\Microsoft\Outlook\ on any surviving or backed-up drives.
5. Open Outlook desktop and use File > Open & Export > Open Outlook Data File to open any .pst files found.
6. Use search in Outlook, and if older items are not appearing, increase the sync range and include Deleted Items in search as described in the search troubleshooting article.
7. If the account was inactive for many years If the email account has not been accessed for more than two years and was closed for inactivity, or if an alias/address was removed from a Microsoft account, the mailbox and its contents are permanently deleted and cannot be restored, even by Microsoft support. In that case, there is no supported way to obtain those old emails from Microsoft services.

For substantiating cost basis, if the mailbox/data cannot be recovered, it is necessary to rely on other records (e.g., financial institution statements, closing documents, insurance records, or any backups that might contain .pst files) rather than Outlook/Outlook.com recovery.

References:

• Email is missing from your Outlook.com inbox
• Recover and restore deleted items in Outlook
• Troubleshooting Outlook search issues
• How do I recover my old email messages, my contacts and everything else I had in Outlook? - Microsoft Q&A
• Attempting to access old email - Microsoft Q&A