With passive marketing setup and people now being driven to contact the club, having a predictable and careful email invite is required.
Having a response pre-prepared ensures all details that need to be shared are mentioned, and saves time for the club officer dealing with new guests (this also makes it more likely that they are consistent with this task).
In addition to all new contacts receiving an email, all previous leads and past guests should be warmly invited to attend every meeting.
A templated email that succinctly but warmly invites a new contact to visit the club, mentions it is a safe place, the details they need to find you, and some personal love for the club.
A templated email that is used to send the agenda and a reminder to all leads and guests for all meetings, inviting them to return.