The MyNewsletterBuilder Java SDK by MyNewsletterBuilder allows to access email marketing features. Developers can integrate newsletter services into applications with the kit, that is available for download from the main site.
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.