You can contact the club by sending an email to the club account, cevc@caltech.edu. Several people have access to this account and should be able to get back to you. Questions about the website should be directed here.
To contact the club mailing list, send an email to cevc-core@caltech.edu.
If you'd like to be added to the mailing list, send an email to cevc-core-request@caltech.edu with the word 'subscribe' in the subject line.