As a Human Resource Development (HRD) intervention, mentoring assists individuals in their career development. However, it is still unknown if mentoring could enhance individuals’ early career decision-making. Moreover, the literature lacks longitudinal research that investigates the role of frequency of contact in mentoring relationships. Therefore, this study examines whether frequency of contact between mentor and protégé influences protégé mentoring outcomes, namely, improvement in career decision self-efficacy (i.e. CDSE development) and satisfaction with mentoring. Data were collected at two times from 86 first-year undergraduate students who participated in a mentoring programme at a Middle Eastern business school, where email communication facilitated the contact between these protégés and their mentors. Based on regression analyses, the associfations were significant between frequency of contact and mentoring outcomes. The findings partially confirmed the effects of two moderating variables in the relationships mentioned above. This study has practical implications for HRD practitioners in higher-education institutions.