Remove data

Question

Remove items

Answer 1

Hi there,

Before you delete items.
Step 1: Collect information about the mailbox.
Step 2: Prepare the mailbox.
Step 3: Remove all holds from the mailbox.
Step 4: Remove the delay hold from the mailbox.
Step 5: Delete items in the Recoverable Items folder.
Step 6: Revert the mailbox to its previous state

You can get more above the steps in the below link
https://learn.microsoft.com/en-us/microsoft-365/compliance/delete-items-in-the-recoverable-items-folder-of-mailboxes-on-hold?view=o365-worldwide

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Answer 2

Use the good old Search-Mailbox cmdlet: https://learn.microsoft.com/en-us/powershell/module/exchange/search-mailbox?view=exchange-ps
The -SearchDumpsterOnly switch will target the content of the RecoverableItems subtree (note that it includes more than purges, so best preview the items before you decide to delete them).
Alternatively, you can use some low-level tool such as MFCMapi or EWSEditor. Or do it programmatically.