Interesting question. Shouldn't be too difficult...one possible approach might be to add an 'Execute Process Task' control flow container calling the likes of WinZip with command-line parameters to encrypt the HTML file created in the 'Test output to HTML file' step. You'd then need to save the path and name of the zip file thus created as a new variable (for instance, varZipAttachment).

Then, in the Script Task add varHTMLMail.Attachments(varZipAttachment), set varHTMLMail.IsBodyHtml = False instead of true as at present and remove the references to the varDeleteListHTML variable and use a hard-coded introductory text string instead as the body text.

This is probably also possible directly in VB.NET script without relying on the external executable, but this isn't my specialty, I'm afraid. 🙂