Som angivet i beslutningen af 23. maj 2001 blev Sernam oprettet i 1970 som en intern afdeling af SNCF til at varetage alle opgaver inden for pakketransport.
As indicated in the decision of 23 May 2001, Sernam was set up in 1970 as part of the SNCF bringing together all activities involved in parcel services.