Abstract Background The MAMAACT intervention was developed as a response to documentation of ethnic and social inequities in stillbirth in Denmark, despite free and universal access to antenatal care. The MAMAACT intervention aimed to reduce stillbirth in migrant families by improving communication about pregnancy complication during antenatal care. Methods The intervention consisted of a training program for midwives and health education materials. It was implemented at a structural level (training of midwives) and, through strengthened needs-based communication during antenatal care, the aim was to improve the health literacy of the women. 19 of the 20 Danish maternity wards participated in the study in 2018-19 and a comprehensive evaluation was conducted. The intervention was co-created with midwifery managers, midwives, and migrant women. Results The management and selected clinical midwives participated in the design of the midwifery training and the health education material as well as the intervention’s implementation and recruitment strategies for the evaluation. As representatives of the target group, a partnership with the non-profit organization Bydelsmødre was initiated. Bydelsmødre trains migrant mothers living in socially deprived areas to help vulnerable migrant women. Evening sessions were conducted with a specific group of women in their community, where the intervention components, the recruitment to the evaluation, and the interpretation of evaluation findings were discussed. A significant contribution was a video explaining the migrant experiences of becoming a mother in Denmark used in the midwifery training. MAMAACT researchers were invited to present the evaluation at the annual assembly for Bydelsmødre organization in 2019. Conclusions The partnership with Bydelsmødre provided a strong voice for migrant women, enhancing engagement with the intervention, recruitment for the trial, and its real-world relevance.