Which action is an example of user engagement in digital marketing?

User engagement in digital marketing refers to the interaction between a user and a brand that goes beyond passive consumption. Commenting on a social media post reflects active participation and a deeper level of engagement. When a user takes the time to leave a comment, they are not only expressing their thoughts or feelings about the content but also initiating a conversation with the brand and potentially other users. This interaction can lead to better relationships, increased loyalty, and greater visibility for the brand in social media algorithms.

In contrast, while sending a promotional email is a method of reaching out to users, it is primarily a one-way communication effort where the user does not necessarily interact in a meaningful way. Watching a video on a brand's channel can indicate interest but is still mostly passive engagement. Similarly, following a brand on social media signifies a commitment to receive updates but does not involve any direct interaction or communication. Therefore, commenting on a social media post stands out as the most effective way to demonstrate user engagement in this scenario.