Does somebody have more insight if they tried to make it a standard, and
failed, so went on without one?
there is an "experimental" RFC9078. I understand, from discussions long
ago, that Google's messages do not conform.
The RFC was an ad hoc and independent effort, but with a fair amount of
participation in the IETF.
Besides Google, Microsoft already has a similar faciliaty in email.
Sure would be nice for them to adapt to the RFC specification...
d/
--
Dave Crocker
Brandenburg InternetWorking
bbiw.net
*** bluesky: @dcrocker.bsky.social ***
mast: @dcrocker@mastodon.social
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