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A comment on The IAB loves tracking users. But it hates users tracking them. Parent comment

Re:The IAB loves tracking users. But it hates users tracking... by oops on Monday January 16, 2023 @10:00AM (#34401312)
Afaik the period thing is a Gmail thing while the plus thing is in the RFC.

However it appears the IAB UID2 README says to only normalize pluses/periods for gmail.com addresses: https://github.com/IABTechLab/uid2docs/blob/main/api/README....

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Re:The IAB loves tracking users. But it hates users tracking... by brewmarche on Monday January 16, 2023 @10:41AM (#34401688)
There is an RFC but it just mentions + as an example of a possible sub-address separator when discussing sub-addresses in Sieve filters. Whether or not + acts as a sub-address separator is server-dependent.
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Re:The IAB loves tracking users. But it hates users tracking... by jrochkind1 on Monday January 16, 2023 @10:44AM (#34401722)
Oh good find, of course they can make a special rule for gmail, which is such a large portion of email addresses it's worth it.
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