Perhaps with a dialog approach to gather the relevant information about the product/service and desired action to take about the recipient. Examples emailwritr and copydyno.

It appears Writecream is more geared towards cold outreach right now. I would like to see more features geared towards nurturing warm/hot leads and existing client relationships. It's less expensive and more beneficial to retain clients. Since they've already done business with us before, there's a greater likelihood they'll purchase again when compared to courting cold leads. Since word-of-mouth and testimonials are also quite effective, I would like to see modules or emails in the sequence to include ai copy that requests our clients leave a review or spread the word.