[takipsizad]

pypi has blocked signups from outlook before. I don't think they care about the impact it creates

[dewey]

I know a bunch of sites who do that and the problem is usually that register emails get flagged by outlook and never arrive, causing a lot of support burden. Easier to then nudge people into the direction of Gmail or other providers that don't have these issues.

[takipsizad]

it was in the context of blocking email providers because of malicious mass signups (https://blog.pypi.org/posts/2024-06-16-prohibiting-msn-email...)

[jrockway]

I've been down that road before. Blocking Outlook and Protonmail filters out 0% of legitimate users and 75% of bots. You do what you can so you're not always 1 step behind.