Dnia 24.10.2024 o godz. 09:08:12 Matus UHLAR - fantomas via mailop pisze:
> On 23.10.24 14:35, Ralf Schenk via mailop wrote:
> >I'm asking if someone is using CSA's
> >(https://certified-senders.org/) certified senders whitelist which
> >is now delivered in JSON together with a simple updater script to
> >convert this in a whitelist/table usable by postfix ?
> 
> Looks like dnswl, but not easily usable and we must sign license agreement.
> Why use it at all?

1) For senders: Because this list focuses mostly on marketing emails sent by
commercial senders, those senders (like ESPs) will be interested in getting
yet another way of increasing their deliverability, and they are big enough
to afford paying for it.

2) For recipients: Because it costs money to get onto that list, businessess
perceive it as "better quality" or "higher value" than DNSWL which is free.
Businesses usually don't trust anything that is free or non-commercial. Also
this list may provide actual higher value for commercial recipients, just
because it covers only mail from other businesses (especially big ones).
Businesses care more for getting mail from other businesses than from some
"random" (from their point of view) sender who isn't a business, whom they
can safely ignore.

Also the name is well chosen from a business point of view. "Certified"
sounds serious and professional and feels like it guarantees something.
Businesses like that. "Whitelist" - as in DNSWL - does none of this. And you
shouldn't underestimate the power of marketing. Why everybody started using
Windows back in the 90's if IBM's OS/2 was better? Marketing (good on
Microsoft's side and failed on IBM's side). Why everybody was using VHS
video cassette system if Sony's Betamax or Philips/Grundig's Video-2000 was
far better? Again, marketing.

Of course looking at this from another point of view, this list can be
considered yet another method of DECREASING deliverability for small and
non-commercial senders, ie. yet another step towards turning email into a
"walled garden".
-- 
Regards,
   Jaroslaw Rafa
   r...@rafa.eu.org
--
"In a million years, when kids go to school, they're gonna know: once there
was a Hushpuppy, and she lived with her daddy in the Bathtub."
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