Now Showing Suite allows you to choose between sending out text based emails or HTML based emails for your requests for feedback.
What is the difference between text and html based emails?
Text emails contain no pictures or hyperlinks. While they are the most basic kind of email, they are almost completely immune to being filtered out by any email and should always arrive at the inbox of a showing agent no matter what.
HTML emails use formatting with pictures to present feedback requests in a way that looks professional and better reminds Showing Agents of the showing they did. These emails are slightly more vulnerable to being filtered out of an agent's inbox by overly selective email providers however.