There is a web interface for mailing lists run by CalMail (@lists.berkeley.edu):

http://calmail.berkeley.edu

log in

choose 'Manage Your Mailing Lists' from the sidebar

type the list address into the text box & click Subscribe.

You can make a mailing list of your own with this interface, too.

Some CalMail lists relevant to ESPM:

• Berkeley Chapter of the Society for Conservation Biology (consbio@lists.berkeley.edu)
• List for gardeners in the new Giannini garden (espm_garden@lists.berkeley.edu)
• ...