I'm working on a few "fun" things at the moment in the SaaS space, but by the far my most successful recent venture was some light (\~8h) coding work I've done for a few clients - super boring, super programmatic.
Mailchimp and other ESPs truly suck as user-level data, and manipulating their downloaded data is a pain. For a few clients, I've created dynamic Google Sheets that update every day with new emails on their list (along with their company, domain, role, etc.), as well as a tab that refreshes every day with every link ever clicked and its unique/total click stats. Very dry, but they love it, they use it every day, and especially during meetings. Surprised ESPs don't let you easily see/extract these things.
For a larger consulting client, a friend manually goes through every email interaction and creates a synopsis, like "this person from this company likes to click these things, is moderately engaged, and has opened the last 5 newsletters" and so on. Again, boring to compile, and the clients find it super useful.
I'd like to turn these into automated services, or at least pseudo-automated services. Does this sound useful to you?