How does one get a thumbnail graphic of a campaign when retrieving it using the API? I would like to get the same thing that you get when the user shares an email to Facebook.
When using our API, we supply you with the HTML of custom XHTML and HTML emails. You would be able to take these and create a thumbnail on your end; however, for emails using our templates, there is no way to do this.
If you have any questions please let me know.