For Whom and For How Long Does the “Be a Mom” Intervention Work? A Secondary Analysis of Data from a Randomized Controlled Trial Exploring the Mid-term Efficacy and Moderators of Treatment Response

•“Be a Mom” is an iCBT tool to manage PPD symptoms and boost postpartum flourishing.•“Be a Mom” is also effective in reducing early-onset symptoms of PPD in at-risk women.•Therapeutic improvements in at-risk women were maintained at a 4-month follow-up.•Higher depression scores at baseline were linked to greater symptom reduction.•Program completers reported a greater reduction in PPD symptoms than noncompleters.