Hi Dgw,
it is similar. You must change message MINE content-type to "text/html" type. Because everyone document in email protocol have set MINE content-type. It is inforamtion for email servers and for email cients (Thunderbird, Outlook and etc.)
For sendning mail with attachments you must use and modified "SMTP Send Multiple Attachments.vi" - if you can do backup of this VI and subVIs. Open Diagram of "SMTP Send Multiple Attachments.vi" after "SMTP Send Multiple
Attachments Message.vi" and ther is VI "MIME Send Data Attachment.vi" - have control "MIME content-type" but code from NI don't use it.
And like as my previous message, create new string control "MINE content-type" and take out this control to "main" Email VI.
And embedd
ed file you set up in control-cluster "attachments". I don't test it, but I mind thet must working 🙂
Have nice day
JCC