Tonight, we've added a new feature that allows you to send just the Plain Text version of your e-mail message to yourself, in addition to the full version containing both HTML and Plain Text (where most e-mail clients will then display the HTML version).
When you click the Preview/Save button in the Send E-mail section, if your e-mail campaign has both HTML and Plain Text message parts, you will see a checkbox in the popup window underneath the e-mail address box. Check the box if you wish for an additional Plain Text version of your e-mail message to be sent to you.