While EmailEngine (a headless email client that allows accessing IMAP and SMTP accounts over REST API) can send regular emails where you provide all the details for the message yourself (recipients, subject line, and so on), two special modes help to achieve email-client-like behavior. These are "reply" and "forward" email
In this blog post, I'm walking through the required steps to register an account with EmailEngine and sending an email from that account. Step 1. Register a new account Register a new account with IMAP and SMTP settings (reference [https://api.emailengine.app/#operation/postV1Account]) curl -XPOST "http://127.0.