Thanks Petra. You are right–it seems like it took a while for the thumbnails to populate, but they are up now. Great plugin and thanks for the quick reply.
Hi Petra, I am having a similar problem, some posts are showing thumbnails and others are showing the telltale “missing image question mark.” Here’s an example. Can you help?
http://jeffgarvinbooks.com/2014/02/24/8-steps-to-writing-killer-emails/
