On 27 Oct 2020, at 19:38, lists <li...@lazygranch.com> wrote:
> And which email clients can do this?
Microsoft Outlook and Mail (Windows 10 and iOS) and Apple Mail in macOS and iOS
and iPadOS, at least.
> A defacto standard needs to be adopted. If I don't provide SPF or DKIM, I am
> likely to be deemed spammy, hence a defacto standard has been established. I
> don't see this with TOTP.
Those almost certainly cover a majority of email client users. And most gmail
users simply use the web browser.
--
"Thank you for sending me a copy of your book; I'll waste no time
reading it." - Moses Hadas
