Hectane is both a Go package providing an SMTP queue for sending emails and a standalone application that exposes this functionality via an HTTP API.

• Ability to attach files to emails
• Support for TLS encryption and HTTP basic auth
• Mail queue that efficiently delivers emails to hosts
• Emails in the queue are stored on disk until delivery
• MX records for the destination host are tried in order of priority
• Run the application as a service on Windows

Documentation for Hectane can be found below:

• Using Hectane in a Go application
• Using Hectane in another language or on a server

In addition to the files on the releases page, Hectane can be installed from any of the sources below:

• PPA: stable | daily
• Juju charm store
• Docker Hub