Background/Aims In Indonesia, 26% of postpartum mothers experience perinatal mental health issues. Midwives have a vital role in supporting postpartum mothers with their mental health. The aim of this study was to determine midwives’ perceptions and experiences of providing postpartum mental healthcare. Methods This phenomenological qualitative study took place between November 2020 and January 2021. Data were collected through in-depth online interviews with 20 midwives working in healthcare settings in Surabaya, Indonesia, who had provided postpartum care for at least 3 years. Results The data were split into midwives’ perceptions and midwives’ experiences. The four themes for midwives’ perceptions were ‘a midwife's role as a companion and supporter’, ‘mental health needs to be addressed during pregnancy’, ‘a midwife's important role providing mental healthcare for postpartum mothers’, and ‘providing holistic care, not just physical’. The six sub-themes for midwives’ experiences were ‘identifying issues by examining attitude’, ‘an intensive approach to initial treatment’, ‘collaborative care or referrals for patients who need further treatment’, ‘openness and a co-operative attitude determine success’, ‘physical and social aspects of successful healthcare’ and ‘midwives need standard guidelines’. Conclusions Midwives have an essential role in postpartum mental healthcare, and adopt an intensive approach. There is a need for national guidelines to assist midwives in providing mental healthcare.