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.
Nine APIs have been added to the ProgrammableWeb directory in the Cloud, Automation, Environment, and Messaging categories. Also added are SDKs for Optimal Payments, Nike+ , Commercetools, and Maventa invoicing. Here, we summarize the new additions and how they can assist application developers.