Multi-part emails on the iPhone and Thunderbird

At APT, most of us read our email in Outlook. But many of us also have iPhones, and a few of the more adventurous folks (myself included) use Thunderbird out of the office. For the longest time, our software's emails would look just fine in Outlook but would be completely blank in other mail clients (notably iPhone and Thunderbird).

So it turns out that when you send a multi-part email, and one part is plain text and the other part is HTML, most clients will display whatever part occurs LAST.

When you use the <cfmail> tag with <cfmailpart>, and the only part you declare is HTML, ColdFusion "helpfully" adds another plain text mailpart for you. At the end. With no content. Thanks a lot, ColdFusion. Very helpful.

So, the "solution" is to explicitly declare an empty <cfmailpart type="text"> tag BEFORE the <cfmailpart type="html"> tag.