Create a new email, addressing it to "listserv@listserv.okstate.edu".

Leave the Subject line blank.

In the Body, enter "subscribe ITANNOUNCEMENTS firstname lastname". For example, "subscribe ITANNOUNCEMENTS Pistol Pete".

No other text or attachments should be in the body of the email, including signature lines.

Send the email. You should receive a confirmation email with a link to confirm your request. After clicking the confirmation link you will have successfully subscribed to the list.