Their email marketing strategy and plan was to optimise their email subject lines because this was the first place that their customers would engage with. To do this, they used an AI generating subject line tool called Phrasee. There are plenty of increasingly sophisticated AIs out there which can do this kind of thing. Phrasee worked for Dominos because it capitalises upon being specific to brand voice, and is optimised to drive action.
Sometimes low-hanging fruit is as easy as it looks. Personalizing emails, as well as segmenting them—a marketing technique that teases out your subscriber list to send relevant emails to specific subscribers—can offer significant returns. Segmenting emails allows you to target specific groups of subscribers, which leads to substantial increases in click-through rate.