Conditional Sections based on Transactional Email custom property data values

[TPolitowski]

How can I prevent specific sections of emails from displaying if the custom property data values are 0 or missing?

I have an email template with 5 sections that contain paragraphs and graphics with custom property data values. However, if the data value is 0, how can I prevent the section from displaying?

I looked at the Design Editor for Creating a module, but it seems like I have to rebuild the entire HTML from the drag and drop design template into the module. Is that correct? Is there any other way?

[christopher-RVO · Accepted solution]

@TPolitowski  It sounds like the function you are looking for is smart rules.

Smart rules allow you to display different pieces of content (rich text, CTAs, images, etc) depending on the a variety of factors including: country, device type, lifecycle stage, and more!

I recommend leveraging smart rules based upon list membership. You would need to segment your audiences into those that have custom property X specified, and those that do NOT have custom properties specified. 

In your marketing email, add the desired module (image, text, CTA, etc) - hover over the newly added module and click more, as referenced below, and click Add Smart rule.