It's natural to be interested in poop, [USER=2]@Alex Snyder[/USER]. Unfortunately, I'm not a gastroenterologist (yet).
Seriously, though, there are several ways people can go about creating email campaigns. I'll try to keep this concise. A user may have a certain goal in mind for the campaign (e.g., lease pull ahead) or the user may ask the LLM what are the three (or six, or ten) major concerns auto shoppers have. The user may also have a time period in mind (e.g., 90 days), or, again, the user may ask the LLM what the optimum length is for that type of email campaign. The same steps can be followed for optimum days. Once the user is settled on a list, they can then ask the LLM to compose each one of the emails. I always read through what's written to make sure there's nothing made up or example content that needs to be altered. After the read-through, the user can then add them to the CRM or blast emailer of choice, and "Bob's your uncle."
Depending on the LLM or service, the user may have to do the whole "I'm a Chevy dealer in a rural market, etc.," but I'm finding with the newer versions of Chat or Claude, this doesn't have to be overly detailed. I'd probably check Perplexity against the LLMs (unless a source is included) if I were going to have the tools give me the topics just to prevent the chance of hallucinations. Even if it's not perfect, people need to consider just how much time they've saved by creating the lines that just need to be colored-in.