According to Campaign Monitor, birthday emails are some of the most effective emails you can send, with a 481 percent higher transaction rate than promotional emails. Other milestones you can celebrate include your subscribers’ sign-up anniversary or your company anniversary. When combined with a special promotion or offer, these emails can drive much greater clicks and conversions.
Email has been shown to generate a better ROI compared to other marketing channels. A survey by the Direct Marketing Association and Demand Metric of marketers in the United States showed that email achieved a median ROI of 122%, which was more than 4 times higher than other marketing channels, including social media (28%), direct mail (27%), and paid search (25%). And in 2016, email marketing generated $44 ROI for every $1 spent, which was up from $38 in 2015.