Despite government backing for the move, the merger was resisted by Dentsu president Hoshio Mitsunaga (光永 星郎 Mitsunaga Hoshio), who was reluctant to give up control of his company's lucrative advertising business, and by concerns that a merger would threaten his advertising customer base – the provincial newspapers who competed against Rengo.
Domei maintained a network of offices outside Japan, dispatching reporters to all allied and neutral countries, and was also involved in film and radio work.
It also collected news and information from various sources to pass on to the government and military, and produced various works of propaganda aimed at foreign countries.
A number of documented incidents from the period around the outbreak of the Pacific War show that on a personal level Dōmei's staff had good relationships with foreign journalists.
Under the Allied occupation of Japan Dōmei was disbanded, and its functions divided split between Kyodo News (共同通信社) and Jiji Press (時事通信社) in 1945 following the end of World War II.