Step 1: Log into your PrestaShop 1.5 dashboard.
Step 2: Using the top menu bar, hover over the Modules tab and select the Modules option.
Step 3: From the Modules list screen, scroll down until you find the module named Newsletter. Click on the Install button located to the right of the module’s row.
Step 4: Once installed, you will see a successful installation message on the screen. Fromhere, click on the Configure link. This will take you to the next step.
Step 5: You are now on the Newsletter Configuration screen. There are two major categories here. The first collects the information for visitors who have not signed up to be a customer, but did opt in to be part of the newsletter. The second is for visitors who have established an account with your store.