The period until the 42nd day after birth is called the postpartum period by the World Health Organization (WHO) Especially the first week of the postpartum period is the transition period both physiologically and psychologically, and the period when postpartum problems are at the highest level.This study was planned as a two-group control and e-mobile application in order to determine the effect of e-mobile training given in the postpartum period on postpartum comfort and breastfeeding self-efficacy.

Inclusion Criteria:

The ages of 18-35, Primiparous and multiparous pregnancy, Not clinical diagnosis of risky pregnancy, Able to understand and speak Turkish, Without communication difficulties and mental disabilities The mother and the baby have not developed any complications during pregnancy, delivery and postpartum period, Having a smart phone in the mobile application group, Those who have not attended childbirth preparation classes,

Exclusion Criteria:

• Preterm birth
• Postterm birth