One of my colleagues got that email. It seems to be saying something quite different to the blog post and the billing documentation, and I don't understand how they fit together.
Even if the email is accurate, which is the better scenario, though, 1000 credits is 100 minutes of Linux build time (or 50 on Windows, 20 on Mac). Which is not much for any but the smallest projects.
> You have 1,000 credits left - these will begin counting down automatically as soon as you run your first build.
> You can use your credits to build on both private and open-source repositories using Linux, macOS, and Windows OS.
> 1,000 credits will be replenished automatically monthly. Additional Credits purchase is not available for Free Plan.