Thank you for reaching out to us. I'm sorry to hear you've had trouble seeing your images come through, but perhaps I can offer some insight.
Many email clients by default will not display images, especially if they come from a 3rd party or outside source. I suggest checking out this article, particularly the section regarding AOL, to learn how you can change your email settings to always display images.
Additionally, I'd also like to mention that Constant Contact does have a Test Send feature. You can utilize this feature so you don't always have to schedule an email as though it were going to one of your full lists. You can find more info on sending test emails here.
If you have any additional questions or concerns feel free to reply to this thread and we'd be happy to help.