The Watchlist allows you to save up to 30 different Gumtree ads so that you can come back to them later on.
To add an ad to your Watchlist, click "Save" next to it on the search or category listings page. It should show a heart emoticon to show that it is saved to your Watchlist.
You can also click the heart icon on the ad image to add it to your Watchlist.
To access your Watchlist, click on the heart icon or "Saved" on the dropdown menu.