Thanks for the feedback, it's really appreciated. This is my aim, I want people to be more in power and control of the tools they use. With tyto, you could make it completely your own and behave as you wish without worrying about the backend part of it. All I ask is that if people do come up with something cool or host their own version they just share the link in the README. This is purely because it's really interesting to me to see how people are using it or what ideas they have come up with.

Checklists? Do you mean checklists on the actual cards themselves? This would be a really easy change. You could change the template for items and have that up and running pretty quick I think. It might require some changes to how the email template works and how json is generated but I can't see it being too major.

Thanks again for the feedback it's really appreciated, I'll see if I can take a look at how checklists would work or if you happen to have a go, let me know, I'd be happy to help or hear about it.