An email/web switch component in post


Some things that are possible on the web are not possible by mail.
A lead example is when we include custom HTMLs or even iframe embeds.

Ghost automatically handles youtube videos, but there are many other cases.

We should have a switch -
In web show this, in mail show this.

So we can handle the cases ourselves - by having a representative image, gif, or maybe just a written message to email readers instead of the current blank