Workflow question: action to send email to multiple people and notify if task not completed by certa

Hi, first post here so I apologize if this should be 2 seperate posts.　　

I want to make a workflow action that will send an email notification to multiple email addresses (recipients are not CRM users). I found the instructions below in the CRMOD "Help" menu but can't seem to get it to work.　　　

- Select the Specific Email Address option, and then specify the addresses. - You can enter email addresses directly, or click the fx icon beside the field, and use Expression Builder to define email addresses. - To enter multiple addresses, use a semi-colon (;) delimiter. - You must enclose the email addresses in single or double quotation marks. - Expression Builder checks only the syntax of the address expressions. It does not check that the addresses are valid.