Is there a way to make an image dynamic in a template?
Also, is there any other way then sending a preview to send an email to an individual, through the API?
Hi entone, you may want to check out this blog post on dynamic images. It all really depends on how you want to implement dynamic images, but you may find some inspiration here.
To answer your other question, you can send draft campaigns to individual email addresses via the API (free, to a max 50 email addresses per day). Happy to answer any questions about this.