How to apply a retention policy to all mailboxes

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To apply the Retention Policy to all mailboxes:

Get-Mailbox | Set-Mailbox -RetentionPolicy “name of policy”


To verify which mailboxes the policy was applied to:

Get-Mailbox -Resultsize Unlimited | select Alias, RetentionPolicy


To run the policy manually:

Start-ManagedFolderAsssistant or Start-ManagedFolderAssistant -identity “user”


To apply policy on non-default folders like Inbox, Sent and Deleted items:

Create a new Retention Policy Tag for “All other folders in the mailbox”.  Just a word of caution, this policy will also be applied to NOTES and CALENDAR items.  If you do not wish to include these items, you can create a separate policy for these items and set to ‘Disable this tag (items are never expired, moved or deleted).


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