Click the "Messaging" menu at the top of your Host Tools dashboard.

Select a listing or a listing group that you would like to add the message rule to. You can select the "All Listings" group if you would like to create a message rule that will work with all your listings.

Click the "+ Add Rule" button on the right side of the screen.

Select a template from the drop-down “message templates” menu.

Make any modifications you would like.

Click the "Save" button in the bottom right-hand corner.