You can let your visitors subscribe to your newsletter list by adding a Newsletter block to the Footer section of the theme.
After adding the newsletter block, you just need to enter your e-mail service provider’s form submit action URL to make the submission work.
When you have an e-mail service provider account of your choice, get the form action URL from the service provider. Now, it’s time to insert into our theme.
Go to “Customize” theme, click “Sections” tab and then “Footer“.
At the Footer section, expand “Newsletter” block. If Newsletter block does not exists, you can add it from “Add content” link.
When Newsletter block is expanded write your “Submission form action URL” into text box.
You are all set!
Now your visitors can subscribe to your newsletter list on your preferred e-mail service provider account using the form located at the footer area of your page.