There isn't any explicit tracking of something like this - CRM only holds on to the current queue an item is in. However you could fairly easily track something like this using a workflow.
Create a workflow on Queue item
Have it fire when the Queue field changes and when the record is created
Then you could create a Note record, set the regarding to the email item "Object (E-mail)" from the list of fields and then place the "Queue" field into the note someplace to record the name of the Queue. You could alternatively use a custom entity to track
something like this as well if you want the history of all emails in one place.
Jason Lattimer
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