We work with different carriers, depending on the shipping method selected and the destination country:
For economy delivery the carrier is always the national postal services (e.g. La Poste in France, Poste Italiane in Italy, Correos in Spain, etc.).
Standard delivery is normally carried by the same national postal services. There might be some exceptions in a few cases: Correos Express in Spain, or Hermes in Germany and Austria.
Express delivery is done by Chronopost, which is represented by DHL in all countries, except France.