[jarofgreen]

A note on the PHP script: it will only work if that PHP server has been configured to send email properly.

If you just have a random Linux server that someone has run "apt-get install php" on, it probably hasn't been configured and so that command won't do anything. eg https://www.quackit.com/php/tutorial/php_mail_configuration....

Ps. Because you can't rely on PHP built-in email functions being configured properly and because apps generally want more control over how email is sent most modern apps will use their own library that makes SMTP connections itself. For example here is Symphony - note the first section on setting up transports: https://symfony.com/doc/current/mailer.html#using-built-in-t...