Doesn't live up to the expectations it builds in the Overview. Uses an extension with a single action (SendEmail) to actually send the email, doesn't rely on the platform's Send Email tool (or underlying system). Screenshots show UI that is not actually available in the application.

The action receives two structures as inputs, the first with all the SMTP settings that will be used to actually send the email, the second one with all the email details, including the body of the email as text.

Seems to be using the MailKit/MimeKit open-source libraries to provide the actual email sending functionality.

1.0.0. This just seems to be more an experiment than something that could be really useful and well maintained.