Thank you for your post, and I apologize for the late reply.
Please enter this suggestion into the Feature Requests web form at:
The product suggestions entered into this web form are monitored and read by Development and Product Management where they are then discussed and considered for future releases. Although I could copy your post and paste it into the web form, there are a couple of questions asked that only you can answer.
In the mean time, there are some third-party plug-ins that will send HTML emails. Although I have not personally used it, I have seen other users make reference to 360Works Email. Using a browser, I found: