Why E-Mail Marketing? E-Mail Marketing generates the highest ROI for marketers when compared to other marketing services available. E-Mail has a large reach with a good size list of e-mails to send customized messages to. E-Mail delivers your message. Email drives conversations or drives clients directly to you. Studies online show 72% of people prefer to receive promotional content through email, compared to 17% who prefer social media. For Bizness Builders members, The G&D Group www.thegdgroup.com will give a 10% discount on any customized e-mail marketing program you would like to set up with no long-term contract.