Ok, I just sent my first campaign today, and in the email I had a couple of banner images for promos on BookFunnel and StoryOrigin that I've joined. All the other images in the email showed up just fine, but those three just appear as broken links or missing images. In the web version of the email they appear as they should. What happened?
Also I'm trying to figure out about bounced emails, and why some are marked "blacklisted"? What does that mean? Is there something I'm not doing that would fix this, or is it not anything involved on my end of the process?
Thanks for the help!