How to insert a web version link
A web version link allows your contacts to view your email in their internet browser (e.g. Chrome). To add the link to your email, select the Merge Tag drop-down and choose WebVersionURL. To display the toolbar, click the space bar on your keyboard and highlight the empty space. It'll be replaced with the merge tag once you've selected it from the drop-down menu.
If you wish to change the text, you can click on the text and press the Edit Link icon: