On NFTify, you can set up an Email Subscription Form on your website to collect emails from your customers by following these steps below:

Step 1: Go to your Store Admin website

Step 2: At Store Admin site, choose Appearance --> Themes

Step 3: On Themes Setting page, click on Customize button to start customizing your themes. 

Step 4: Click on Add Section button on the left corner.

Step 5: Click on Email Subscribe section to add it into your theme.

Step 6: You can see the setting of Email Subscribe section and you can edit title, subtitle, text in the email box and button label here. 

Step 7: Click on Integration to select the Mailchimp API key. If you haven't integrated with Mailchimp API key, click on Setup Email Integration button. 

After finishing all the process, click on Save button. You can remove this section anytime you want.

You can find out more about how to set up Email Integration with Mailchimp here.