Support mailbox redirects it to
waiting.NYGG.LOCAL@email.autotask.net. Workflow rule fires (ATES-NYGG13W) which will auto-set status to waiting customer and also send the ticket contact(s) the note.
When you send the email, as always, a ticket note will be sent to the ticket contact(s). It's a good idea to address the customer in this note so they are not confused by receiving a blank ticket note.

As always you must have the ticket # in the subject in order for AT to process it correctly.