Rebel is known for its interactive emails. But, developers had asked for Rebel to launch an API that allowed them to build emails with JSON (same process as Rebel Actionable API) without the need for interactive functionality. In response, Rebel has launched the Rebel Lite API.
Email-list.com provides email marketing and social media tools for businesses. Recently the company announced an Email List API that gives visitors to your website access to counts and quotes on email lists.
Do you know if your emails reach your users' inbox? You may see clicks and opens, but were all your emails seen? SparkPost offers this certainty to developers for free or low cost. SparkPost sends 25% of the world's legitimate emails. They make solving email delivery as easy as making an API call.