In this tutorial, we will see how it is possible to automatically display locks on items reserved for subscribers. In this way it will be possible for readers to differentiate between paid content and free articles.

To do this, we will use conditional variables. To learn more about how they work, I invite you to read this article that deals with the subject of conditional variables in newsletters.

Before we begin, let's point out that there is one prerequisite:

We're going to add a conditional variable on all items that will display a lock when the item is paid for and won't display anything when the item is free.

Here, the metadata used to identify a paying item is "premium". So we will use {{#metadata.premium}} padlock image {{/metadata.premium}}.

2.  {{#metadata.premium}} add the padlock image here {{/metadata.premium}}

3. Adjust the size of the image by clicking on it.

4. Repeat the operation on all the articles of the newsletter otherwise the conditional variable will not be active on all the contents.

After adding the conditional variable on all the articles, we see that it works correctly, since articles 1 and 4 display the padlock. This is only a preview. To manage the editorialization of the contents, you have to go to the "Editorial" tab.

Good to know:
For images, use the following formats: .jpg or .png :

For this example, I chose to use an image, but it could be text e.g. {{#metadata.premium}} Reserved for subscribers {{/metadata.premium}}.
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