Many issues rise from the fact that posts are emails too by default.
For example if we want different parts of the text in the mail: Excerpt only newsletter and/or respect the public view content divider - #3 by Stromfeldt
Or if we include interactive embeds that are not supported in mail.
(Which the official docs recommend to replace with screenshots, send the mail, then edit the post back to the embeds)
This is all busy work accumulating facing the fact that often the mail structure is similar but not the same as the post itself.
Maybe we can have 2 modes when creating a post - post and mail.
By default they’ll mirror but let’s say when we finish our edit and ready to publish - we can go to the “mail” mode and edit out embeds, maybe cut to an excerpt, add a special message to our mail readers, etc.