> On 14 Sep 2022, at 09:48, Otto J. Makela via mailop wrote:
>
> On 13/09/2022 02.44, Brandon Long via mailop wrote:
>
>> Most of the major mailbox providers do have other feedback loops,
>> many based on ARF, that can be used for this...
> Has anyone put together a good summary of available feedback loops,
> specially from big players?
I used to maintain one but now I point folks at the Validity universal FBL
signup page. Last I looked they were also including FBLs that they didn’t
handle the signup for.
A few things to note:
* all the FBLs that I am aware of include consumer mail, even when the mailbox
provider handles mail for hosted domains
* with the exception of Google’s complaint percentage calculation in postmaster
tools, FBL %s may not reflect actual complaint percentages. In most places
recipients cannot report spam for mail already in the spam folder.
* FBL reports typically are only generated when the recipient is using a client
provided by the FBL provider. If someone is using Outlook for desktop or
Apple’s mail.app the “this is spam” button does not generate a FBL complaint.
* it is common (and has been for a decade or more) for bad players to
manipulate complaint percentages through waterfalling another other techniques
as a way to hide their activities from abuse desks.
* from my perspective, complaint rates are an increasingly unreliable signal. a
very high complaint rate is informative, but the a lot of spam goes to the bulk
folder and gets few or zero complaints.
laura
--
The Delivery Experts
Laura Atkins
Word to the Wise
la...@wordtothewise.com
Email Delivery Blog: http://wordtothewise.com/blog
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