Hi there, @lette
Just came across this post and you’re right, it doesn’t look as though it has any actions that would allow you to retrieve the desired data from ConvertKit. I’d recommend reaching out to our Support team to submit a feature request for the ability to get the total subscribers, unsubscribes, average open and click rates. You can do that here: https://zapier.com/app/get-help
In the meantime, perhaps you can use ConvertKit’s API Request (Beta) action to make a request to ConvertKit’s API directly to retrieve the necessary data? If you’ve not used that type of action before I’d recommend checking out our Set up an API request action guide to learn more. It’s a bit more advanced as you’d need to reference ConvertKit’s API documentation to get the request set up. But it looks like it might be possible with their Get stats endpoint: https://developers.convertkit.com/#get-stats.
Hope that helps. And if you run into any issues in giving that API Request action a try just let me know - happy to assist further!