Popo Suryana (2022) “E-MAIL MARKETING STRATEGY IN INCREASING CUSTOMER RETENTION IN E-COMMERCE”, Jurnal Ekonomi, 11(03), pp. 2168–2172. Available at: https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/4048 (Accessed: 24 May 2026).