Greetings.
What I believe will happen is most non-big mail client apps will support
BIMI if they support avatars, otherwise, they won't, cause the arguments
on the receiver side are the same for both features.
I don't buy the "promoting authentication" argument. There would be a
marginal benefit in spreading DMARC via a UI good-to-have feature as a
carrot, thus combating phishing, but DMARC doesn't need help spreading,
it's become a requirement by the big mail receivers. So BIMI only
becomes useful if VMCs are used. Yay, another bureaucracy on top of the
certificate issuer and domain registration ones. Even more hassle and
expense for small senders.
The big mail players will adopt BIMI cause their clients (the marketers)
are proposing it. So eventually anyone without a logo next to their mail
will be met with suspicion by the users. Have an e-shop but don't have
VMC-backed BIMI? You get your logo shown but no blue checkmark on it,
uh-oh, now you're in the spam folder, oops. Tough to be you.
Eventually, no BIMI = +5% spam chance and life will go on as usual:
small mail operators and SMBs will be even less in control of the
deliverability of their mailings while the big senders get even more
closely coupled to big mail providers.
BIMI is trying to do identity. IMO identity will not be solved in mail
inbox UIs. It'll come from concerted efforts elsewhere and mail will
integrate into that.
Regards,
G. Miliotis
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