I am currently trying to develop an Apple Watch optimized email. But none of the existing approaches like using headers
Content-Type: text/watch-html; charset="utf-8" Content-Type: text/X-watch-html; charset="utf-8"
doesn't work.
I also used the tricks described in the article on Litmus https://www.litmus.com/blog/how-to-send-hidden-version-email-apple-watch/ but it also had no effect. Apple Watch displays the standard text/html version of the email. Perhaps someone has a working solution or an explanation for the reason for this behavior.
