Background: Prenatal education is a core component of perinatal care and services provided by health institutions for the well-being of the women and fetus to promote a positive pregnancy, childbirth and postpartum outcome, Aim: This study aimed to evaluate the effectiveness of online antenatal educational classes on pregnancy outcome. Study design: A quasi-experimental research design (study and control group) was utilized. Setting: The study was carried out in antenatal clinic and labour unit at Women Health Hospital, Assuit University. Sample: A purposive sample was utilized. Study subjects: The study subjects included 100 primigravida and primiparous women (50 in study group and 50 in control group) according to inclusion criteria. Tools: Three tools were used, a structure interview questionnaire, Follow up checklist during labour and postpartum period to assess maternal and newborn outcomes, Results: The results of the present study highlighted that there was a statistical significant differences between two groups regarding occurrence of pregnancy complications, mode of delivery, intra-partum complications, newborn outcomes, postpartum complications and continuation of postpartum family planning methods, Conclusions: The present study concluded that online or mobile health intervention has the potential to increase the utilization of antenatal and postnatal care compared to the routine approach and the technology method effective in an improvement in maternal and newborn outcomes. Recommendations: Integrate social media educational program in nursing protocol for pregnant women.