Why finding a GitHub user's email is harder than you'd think

You've found a contributor whose work you depend on. The maintainer of a package you use, a developer who fixed something for you upstream, the author of a CVE you need to coordinate with. You have their GitHub username. You'd like their email. You'd think this would be a GET away. It isn't. Here's why — and what it actually takes to find one. The GitHub API doesn't have it GET /users/:login returns an email field. For the vast majority of users, that field is null . GitHub flipped private-by-de