The guys from Authority Hacker run through the five agents and conclude 
The email management for newsletters would be what I would choose because it’s high value you can sell it for $5-10K plus [per month]
They show an example of an AI agent they’ve created for their own newsletter.
With that in place, all they have to do is write some rough notes / bullet points for each edition 
An AI agent takes those notes, researches and fleshes everything out, then writes up a draft of the newsletter using previous editions as a guide to nail the voice / writing style.
Still some light human editing needed before sending, but overall the AI saves a ton of time and money (compared to hiring someone or doing it all yourself) 
The result…
30% open rate on the list to tens of thousands of people… the clickthrough rate is also very high… people actually like it. This newsletter has driven a lot of revenue over the years.
The idea is to set up and maintain agents like this for clients.
Definitely a learning curve to learn how to build AI agents, but tons of opportunity there if you’re willing to do the work 