Send password for new users by default

When a user sends a ticket the first time, they get the auto-reply with the ticket link plus the info that they can request a new password for the initial login.

It would be much more user-friendly if the password would be sent automatically for new users so that they can just login instead of having to request a password.

So, the feature request is about an option that automatically sends the initial login (new password) to new customers.

This is especially important for external support where users should be encouraged to use the Web system instead of replying over insecure email for privacy reasons (see also [GPDR] Reply bodies are sent over insecure email - send only HTTPS link instead).