SMTP Email Provider

This provider uses the SMTP protocol to send emails. It is the most common way to send emails and is supported by most email providers.

WARNING

This requires that Rhombus was built with the smtp feature flag enabled.

To configure the SMTP email provider, add the following to your config.yaml:

email:
  from: My CTF <no-reply@example.com>

Then, use the RHOMBUS__EMAIL__SMTP_CONNECTION_URL environment variable to configure the SMTP connection with your secrets. The specification for the connection url can be found here.

For example:

smtps://username:password@smtp.example.com/client.example.com:465

Will use SMTP over TLS, with username username and password password, connecting to smtp.example.com on port 465, and setting the HELO / EHLO name to client.example.com.