Deleleted a defective mailbox in exchange 365 and re-created a new MB for the user. Now need to recover some emails from the deleted MB.

Yossi Nagel 21 Reputation points
2021-02-23T14:46:01.007+00:00

Question is: if i restore the deleted MB, would it run over and override the new MB i had created for my user? Is there a way to restore to a PST or to change MB user name?

Thanks!

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Lucas Liu-MSFT 6,161 Reputation points
    2021-02-24T04:23:03.867+00:00

    Hi @Yossi Nagel ,
    How did you recreate a new blank mailbox for this user?

    According to my test in my lab environment:

    1. I soft-delete user EXO4 mailbox, then I could view it in the Deleted users in Microsoft 365 admin center.
    2. Then I create a new user named EXO4 in Microsoft Azure and assign Microsoft license for this user. I logged into the mailbox of the newly created user EXO4 and found that there was no data in it, it was a brand new mailbox.
    3. Then I try to restore the deleted user mailbox EXO4 in Deleted users, I get the error shown in below screenshot. After that, I changed the primary email address to EXO4-1 and successfully restored the mailbox, and then assigned the license.
    4. After logging in to the EXO4-1 mailbox, I found that the previous emails were successfully restored.
      71309-1.png

    If you are worried that the restoration will affect your new mailbox, you can back up the mail in your new mailbox in advance.
    For more information: Backing up email in Exchange Online

    In addition, the retention period for soft-deleted mailboxes is 30 days. Please make sure that the mailboxes you deleted before have not been deleted permanently.
    For more information: Delete or restore user mailboxes in Exchange Online

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