While planning your post in Social Media Poster you can add images, GIFs, and UTM parameters to post links.

This statement is true. Semrush's Social Media Poster tool allows users to fully customize their social media posts. When planning a post, you can indeed include images and GIFs to make your content more engaging. Additionally, the tool provides the functionality to add UTM parameters to any links included in your post. This is crucial for tracking the performance of your social media campaigns, as UTM parameters allow you to see exactly where your traffic is coming from in analytics tools. Therefore, all mentioned functionalities are available within the Social Media Poster.