This screen allows you to join or leave the UTCH-L list. To confirm your identity and prevent third parties from subscribing you to the list against your will, an e-mail message with a confirmation code will be sent to the address you specify in the form. Simply wait for this message to arrive, then follow the instructions to confirm the operation.
Alternatively, you can login with your LISTSERV password (if you have one) and update your subscription interactively, without e-mail confirmation. If you originally subscribed via e-mail, you must use the same e-mail address in its complete form (not an alias).