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Detecting throwaway email addresses during registration
(media.piefed.social)
Spammers, trolls, and ban evaders often use temporary email addresses. PieFed now checks a list of known temporary email providers and displays a warning icon next to registrations that use such services.
If registration mode is set to "Open" (no approval needed) then the site admin(s) receive a notification instead.
A throwaway email address isn't always a bad thing but it's one factor that admins might want to take into account.
Aliases are different and not flagged by this feature. It just looks at domain names.
Multiple big Lemmy instances have been using the exact same blocklist for a long time (although it's not a core feature, they've patched it in somehow). I got the idea by lurking in the Lemmy matrix rooms and seeing their discussion.
How are they meaningfully different? I just checked the list you posted above and several of the alias domains I use are on that list.
Did you think about it before implementing it?
Ah I see we are using the word alias in a different way. I was using 'Alias' as technical term with a very specific meaning. Never mind.