IMCO (Inter-Mission Cooperative Outreach) is a partnership of ten mission agencies sharing a common mandate – to reach Native North American peoples for Christ toward the establishment of a strong and reproductive Native church. IMCO members consult with one another, exchange information, and partner with one another on specific tasks in order to serve Aboriginal people more effectively.

Since its beginnings in the early 1970s the signature activity of IMCO has been its nearly annual Ministry Development Program (MDP). MDP is an eight-week microcosm of living and ministering among people of a different culture. MDP exists for the development of ministry and interpersonal skills for maximum effectiveness in fulfilling the Great Commission through the purpose of each mission agency. Since MDP's inception the vast majority of new missionary staff within the IMCO agencies have been required to participate in this program which currently assembles each spring in Timber Bay, SK.

A secondary activity of IMCO has been its every-fifth-year joint-staff conference. Since 1972 this conference had provided unique opportunity for IMCO-agency missionaries to connect with hundreds of other people who identify with similar goals and objectives. The relationships developed and strengthened at these conferences have produced considerable inter-agency and inter-cultural partnering over the past nearly four decades.

IMCO leadership meets each May and November. The IMCO association is currently undergoing metamorphosis as a result of the maturing of Aboriginal leadership across North America. This is in keeping with the IMCO agency directors’ desire for proper composition of leadership to ensure that the First Nations voice has the presence proportionate to what God is doing among our First Nations brothers.