Sabine Flegel

mainzplus CITYMARKETING GmbH is a private company based in Mainz, Germany that combines Mainz Congress, Mainz Tourism, and Mainz Culture to promote Mainz as a destination for tourism, culture, and conferences. The German company provides event venues such as the Rheingoldhalle, Electoral Palace, and Frankfurter Hof in the Old Town. The company was founded in 2012 and is led by CEOs Marc André Glöckner and Katja Mailahn.

Mainzer Stadtwerke AG engages in the supply and distribution of electricity, district heating, gas, and water. It also provides internet and network services, such as Mainzer Internet, Mainzer Ethernet, Mainzer WLAN, and Mainzer Cloud. The company was founded in 1971 and is headquartered in Mainz, Germany.