Can I set up an automated 'Signup Message' for a new user without payment set up?

In Membership 2 Pro I can see 7 automated email responses, eg 'Signup - Completed with payment Message' but we only have one membership to sign up for and it's free, so I'd like to create a 'Signup Message'.

At present I have installed Automessage plugin but it doesn't allow for a copy to be sent to Administrator, as Membership 2 Pro messages do. And there is approx 20 mins delay before email is received.

Thank you