You are able to customise the URL of your Campaign before sharing it on social media.
To replace the default Campaign URL, you will have to click the Link tool in your toolbar and then select the Social Networks option.
You will then need to select the relevant Social Network icon and insert the Title that you want to appear before the Campaign URL when shared by the recipients. Then, click Show next to Advanced and you will be able to enter the custom URL.
After this has been saved, when the icon is clicked in the Campaign, the recipients will see the custom URL.