Mailing bag from St Jean to Santiago?

I used Express Bouricott to send my suitcase to Santiago from St Jean last year. Their service is more expensive than the post office, but for me the convenience made up for the difference in price. All that you need to do is go to the Express Bouricott office in St Jean, pay them and they will give you a tag to attach to your suitcase. Then just let them know were you are spending the night before you start the Camino and they will pick it up there in the morning. They store the luggage at Hostal LaSalle in Santiago, where you can pick it up any time of the day, any day of the week because the front desk is staffed there 24 hours a day. And the hotel will give you a discount on a room when you get to Santiago.