We manage our mailing lists and mass email communications through a third party provider, Campaign Monitor. Emails which we send to our mailing lists contain page tags (sometimes known as web beacons) that track whether an email was delivered and opened and whether links within the email were clicked. This information is collected for the purposes of providing email campaign performance information and measuring the performance of email messages we send.
You can often restrict or block cookies which are set on your device through your browser settings. You can be notified when cookies are sent to your browser, and you can delete existing cookies. The Help function on your browser will tell you how to do this.