OEX S.A., through its subsidiaries, provides sale and client support services and technologies. It operates through three segments: Retail Sale Network Management, Sale Support, and eCommerce Services. The company offers retail services comprising managing of a network of stores for mobile phone operators; sales force leasing, merchandising, and retail surveys; and field marketing. It also provides eCommerce services, including warehousing and fulfilment, and customer experience solutions. The company was formerly known as Tell S.A. and changed its name to OEX S.A. in January 2016. OEX S.A. was incorporated in 2004 and is based in Warsaw, Poland.