This field controls the format of the message.
<p><b>HTML and text (multi-part):</b> this is the default. It allows you to specify the message in HTML and plain text. Users that have their email clients configured to display HTML will see the HTML email, and users that don't will see the plain text. If the user the message is sent to has their email preference in Squirrelcart set to text, then only the text portion of the email will be sent to them.</p>
<p><b>HTML only:</b> only HTML will be sent to the recipients. Keep in mind that choosing this option will send HTML to customers even if their email preference in Squirrelcart is set to text.</p>
<p><b>text only:</b> only text will be sent to recipients.</p>