div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: RegpackEmail Marketing Optimization Hacks Case studies According to Sikich 70% of digital marketers see email as the top medium for ROI and 62% of B2B marketers plan to continue src=https:reader033vdocumentsusreader033viewer20220604075f0fa5e37e708231d445336ehtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv