Configuration/settings/admin email
From DAViCal Wiki
$c->admin_email = 'admin@davical.example.com';
default: 'admin@davical.example.com' (a known-invalid e-mail address)
Sets the administrator e-mail address, which is displayed in a few places, and which may also be used as the 'From' address for (e.g.) lost password e-mails.
Available from DAViCal version: All versions and later

