This isn’t just happening with CF7 or Woo, it’s nearly every WP form plugin that uses HTML to format it’s emails.
This new option of “Mime Type” is defaulting to Plain Text. Going into the Elastic Plugin setting and changing this setting to HTML fixes the issue.
Simple if you have 1 site, a much more complicated issue when you have 60. Serious oversight from the Elastic Email team, something like this should have been thoroughly tested and obviously was not. We suddenly had 40 pissed off customers who weren’t able to decipher their emailed leads, not a good look.