It would be great to have a Website Card (or insert better name here).
“Only visible on the web, this card will not be published in an email.”
This would allow for circumstances where you might want to promote your newsletter or invite people sign up, without it bothering the folks that are already signed up!
Another use-case for this: I have content (such an interactive embed) that works online but not in the email. So I can put an alternate description or something in an email card, and the actual embed in a do-not-email card.
(Of course, if email cards could include images it would be that much better: all I have to do is upload a screenshot of the live embed and invite users to click on it!)
I just got started with newsletters and this is clearly a feature that I’d like to have and I came across this post. Any news on this one @galligan @badrihippo?
There is a related idea (Excerpt only newsletter and/or respect the public view content divider) which got closed after being referred to Premium previews for email newsletters which doesn’t satisfied my use case. I run a hobby site, have only free members and don’t intend to use premium (paid for) subscriptions. I remember that Ghost made a clear shift to focus solely on people wanted to make money out of their blog ://
No updates, unfortunately 
the workaround is to email it out without the web-only parts, and then update the post after the email’s gone out—which is far from ideal.
This is how I accomplish this, but it would be a lot easier to have a web-only card.
This is now available, both for CTA cards and HTML cards when you need more flexibility!
