this post was submitted on 17 May 2025
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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.

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[–] [email protected] 1 points 28 minutes ago

As others have stated this is a terrible idea especially for the fedi where people are far more likely to use alias addresses. Incredibly tone deaf.

[–] [email protected] 6 points 7 hours ago (3 children)

I don't really understand the hostility to this. Do users understand why emails are part of account registration in the first place instead of letting you sign up without an email?

[–] [email protected] 1 points 1 hour ago

I literally do not.

[–] [email protected] 2 points 5 hours ago

Because people forget passwords and demand a password reset mechanism. Also a place to send terms and conditions and changes to those.

[–] [email protected] 2 points 7 hours ago (1 children)

To be fair Lemmy does allow you to sign up without any email at all (or at least used to, dunno if they changed it), so it's not surprising that this goes against many peoples expectations.

[–] [email protected] 4 points 7 hours ago* (last edited 7 hours ago)

Pretty much every Lemmy instance requires email. The only ones that do not require it are small enough that spammers haven't found them yet.

[–] [email protected] 27 points 10 hours ago (2 children)

I have to chime in and say this feels a bit underthought feature. I use a throwaway email for everything possible, and I would imagine a large portion of Fediverse users do that too.

I also get the motivation behind the feature. I didn't feel like throwaway addresses are worth it before I started using them. They may seem like an obvious spammer flag. But I'd say it's 50/50, just like with any free email provider like gmail or Proton mail.

[–] [email protected] 4 points 10 hours ago (1 children)

You say it's 50/50 based on your own experience/anecdotal evidence. Admins will probably be able to make that determination with a much greater deal of accuracy based on what they see happening on their instance. So it makes sense to leave the choice to them/enable them to make that choice, right?

[–] [email protected] 1 points 8 hours ago (1 children)

True, I failed to mention that I think there could be a setting to enable the feature, or dismiss the warning per-account. @[email protected] maybe consider this?

[–] [email protected] 2 points 7 hours ago
[–] [email protected] 1 points 9 hours ago

We'll see. If it turns out to be useless noise, I'll remove it from the signal.

[–] [email protected] 9 points 10 hours ago (2 children)

I have to say that's extremely unfortunate that you would add such a feature. We use aliases to maintain our privacy and this is come corpo surveillance shit. Not cool.

[–] [email protected] 6 points 10 hours ago* (last edited 10 hours ago) (1 children)

@Ulrich @rimu

Ok, but that's not the only use case for it. It's also used by spammers and abusers to make everyone else's lives worse and it's admins who have to bear the brunt of that.
So I think it's fair to give them the option to weigh the costs and benefits of allowing it and then either do or not do something about it.

[–] [email protected] -3 points 9 hours ago* (last edited 9 hours ago) (1 children)

This is just lazy discrimination and a deep disrespect for the privacy of your users. If you can't be bothered to actually admin a community properly then don't create a community.

[–] AwesomeLowlander 1 points 1 hour ago

Go create your own then? It's a free service, you're not actually owed anything.

[–] [email protected] 4 points 9 hours ago (1 children)

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.

[–] [email protected] 3 points 9 hours ago* (last edited 9 hours ago) (1 children)

Aliases are different and not flagged by this feature.

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.

I got the idea by lurking in the Lemmy matrix rooms and seeing their discussion.

Did you think about it before implementing it?

[–] [email protected] 4 points 9 hours ago

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.

[–] [email protected] 29 points 14 hours ago (1 children)

Hello! Representing a real human with a throwaway registration 👍

[–] [email protected] 5 points 13 hours ago

Yeah but we all know you're a troll @[email protected]

[–] chickenf622 12 points 12 hours ago (1 children)

Does this include people that use email aliases to keep the connections between accounts harder to make? I pay for this service so it's genuinely not a throw away account. Just a way to maintain some privacy.

[–] [email protected] 6 points 12 hours ago* (last edited 12 hours ago) (1 children)

I don't know which service you use or whether it is on the list. But if it's a paid service then it's probably not on the list. Things on the list are like https://10minutemail.com/ or https://www.guerrillamail.com/

You're free to maintain your privacy and admins are free to weigh the potential risk of accepting an application with a warning icon on it. I'm sure there will be plenty who ignore it.

[–] chickenf622 5 points 11 hours ago (1 children)

I appreciate the straightforward answer of you're not sure answer (no sarcasm) . I just want to make sure paranoid people like me can still participate and I keep their level of privacy

[–] [email protected] 3 points 10 hours ago (1 children)
[–] [email protected] 3 points 9 hours ago* (last edited 9 hours ago)

Every alias domain I have is on this list. Not cool.

[–] [email protected] 9 points 13 hours ago (1 children)

Also a real human with a throwaway registration address!

[–] [email protected] 2 points 7 hours ago
[–] [email protected] 2 points 9 hours ago

Nice, Another powerful feature admins can use if they want.

[–] [email protected] 1 points 9 hours ago (1 children)

The more important demographic to use temporary email addresses are people who think their identity is not your concern.

Ah, OK, that's mentioned.

IMHO something like WoT in Freenet would be better. Having many cryptographic identities, but to start using one you have to spend effort confirming it's real. Solving captchas or whatever. Of course it's an obsolete solution, captchas are now solved by bots easier than by humans. But you get my idea.

[–] [email protected] 2 points 6 hours ago* (last edited 6 hours ago) (1 children)

their identity is not your concern

There are competing concerns. The instance admin is concerned with avoiding de-federation by keeping the amount of spam and abuse coming from their instance to an acceptable level, without burning out. Some people signing up are concerned about their privacy. (Although this doesn't actually diminish their privacy or stop them from using a throwaway email address. It does suggest that their application needs extra care, tho.)

There's a balance to be struck.

In this case I'm leaning towards the side who pays the bills and the one who decides which software to install on their server. Without getting those people on board there won't be a place to apply for an account with and then act all distrustful about.

Someday when I make my super awesome instance-chooser, maybe "Email address is optional" will be one of the filters. Along with "Bans for criticism of China".

[–] [email protected] 0 points 1 hour ago* (last edited 1 hour ago)

Although this doesn't actually diminish their privacy or stop them from using a throwaway email address

That's exactly what it does.

Without getting those people on board there won't be a place to apply for an account

What does it matter if there's a place to apply for an account if I can't use it? Better not to exist at all.

[–] [email protected] 3 points 13 hours ago (1 children)

i don't have a dog in this race but i must say that this is quite the spectacular manner by which to throw the babies out with the bathwater!

[–] [email protected] 1 points 12 hours ago

literally 1984!