Use this feature if you'd like the value of a <select> field to determine who the email goes to. For example if you have a contact form and a want the user to select a department which would determine the recipient.

For example you could use this html:
<select name="department">
<option value="support">Support</option>
<option value="billing">Billing</option>
</select>

Then in the fields below you would put department in the "Name of the Select or Input Field"
Then in the "Value" field put support with the "Email" field support@yourcompany.com etc.