Odessa 

Lone Star Overnight (LSO) and Federal Express (FedEx) are the overnight courier services. LSO is the primary courier for all deliveries within the State of Texas.  Mail Services is the central processing agent for the overnight courier service and will provide a bill of lading. Outgoing shipments must be received at Mail Services by 2:00 p.m. to be shipped the same day. If you must have mail sent by overnight courier, but it cannot be delivered to the Mailroom by 2:00 p.m., refer to the drop box information below.

LSO drop boxes refer to http://www.lso.com/dropboxlookup.asp 

FedEx drop boxes are located at http://fedex.com/