Google has released an updated Gmail API that functionally replaces the Email Settings API. The Gmail API includes a number of new endpoints that enable features previously unavailable through any Google API. Developers have access to filters, auto-replies, send-as aliases, and more.
MailZ, transactional email delivery service, offers the MailZ API to enable systems and applications to incorporate email response features. MailZ features enable third party apps to deliver single-recipient emails after integration with the MailZ API. MailZ supports a wide range of content management systems and email platforms. In addition to automated email responses, MailZ delivers analysis and tracking tools for a more powerful email response system.