Requires PHP ‘allow_url_fopen’. Bad security practice

This plugin looked like it was able to do what I wanted (send as a group email address ‘no-reply’ rather than my user email address in Google’s G Suite), which would have been awesome and I would have 5 star’d this plugin in an instant. BUT, it requires the PHP ‘allow_url_fopen’ runtime which I have specifically disabled on my server because it is a security risk.

Postman SMTP plugin can do OAuth with Google without the ‘allow_url_fopen’ runtime, but doesn’t seem to allow for sending email as a google group like this plugin seemed to do.