From the Dashboard, after logging in, click on Messages / Queues in the bottom left corner. You will then have the following options, both in the main part of the window and along the left-hand side:
Once you have clicked on one of the above options, you will see the list of messages belonging to it, sorted by received date, the From address, the recipient address, the subject, and for quarantined messages the reason why it was put into that quarantine queue.
Along the top of the list will be a number of buttons to help you review and process the messages. The following are available in all views:
The following are only available for the Quarantined (User) lists and the Quarantined (Admin) views:
The following are only available in the Queued for Delivery and Bad Messages views:
The following is only available in the Queued for Delivery view:
The following is only available in the Bad Messages view:
Domain administrators can view all mail associated with their domain, while global administrators can view all email messages currently being stored.