How to Use Gmail Labels (Step-by-Step Guide w/ Screenshots) Gmail lets you edit or delete labels quickly. Here's what you need to do: Step 1 Sign in to your Gmail account, and find the label you want to edit or delete in the sidebar on the left. Step 2 Hover your mouse over the label, and you should see a three vertical dots icon; click the icon. Step 3 Click on the Edit option to edit the label.