# Cleaning Up Messages Using the Exchange Mailbox

Message cleanup is performed separately from message archiving.

## User Mailbox

Depending on what you configured in the Exchange user mailbox plan, you can:

- Stub, and then delete messages from the Exchange server.

- Delete messages from the Exchange server without stubbing the messages. This is also known as source pruning.

- Stub or delete only the messages that include attachments.

What Is Stubbed

- Mailboxes

- Disabled mailboxes

- Email messages

What Is Not Stubbed

- Non-email messages such as appointments, contacts, and so on

- Archive mailboxes

## Journal Mailbox

If you enabled cleanup in the Exchange journal mailbox plan, you can delete the contents of the journal mailbox on the Exchange server.

## ContentStore Mailbox

If you enabled cleanup in the Exchange journal mailbox plan, you can delete the messages from mailbox on the ContentStore Mail Server (SMTP).

## Blackout Window Exception

When operation rules are added to a blackout window, operations that start during the time window specified go to a queued (as opposed to pending) state. After the operation rule time window elapses, operations resume automatically. See Creating a Blackout Window, for more information.

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