This would have to get the user to follow a link or call a phone number or something though. These are plausible. It's too bad the content-security-policy can't prevent following links.
While they're nowhere close on volume, they're certainly beating microsoft in terms of the rate they're adding similar looking official URLs.
Shortening your brand to 4 letters when your chosen TLD is the same length as your full brand name is such a weird choice.
$inane_marketing_trope
...
Click here to Unsubscribe from Bluesky
https://porcini.us-east.host.bsky.network/xrpc/com.atproto.s...
...
Redirects to bad site.
It's like if you point to your own Apache server in your own domain where you host a scam page and say there's a security issue with Apache because you could do that.
Or are you saying that you can make this person's server serve third-party content?
Http: yes see OP
Email: not sure. Hopefully not. But spoofing happens.