How can I add a subscription feature to my 'Contact Us' button?

Store Design
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Topic summary

Goal: add newsletter subscription functionality to the Shopify store’s “Contact Us” button in the Capital theme.

  • The requester has no coding experience and shared screenshots of existing code; these images are central to understanding the current setup.
  • A respondent cautions that this isn’t straightforward without familiarity with Shopify theme schemas and Liquid.
  • Liquid: Shopify’s templating language used to render theme components and handle dynamic content.
  • Theme schema: the JSON configuration that defines sections/blocks, settings, and inputs in the Theme Editor.
  • Recommended approach: create a custom section/block and theme settings from scratch to incorporate subscription logic, rather than modifying an existing theme block.
  • No code samples or step-by-step instructions were provided; no alternative “quick” solution was offered.
  • Status: unresolved and open. Next steps likely require developer assistance or learning Liquid and theme schema to implement a custom subscription integration.
Summarized with AI on January 8. AI used: gpt-5.
1

Hi- I am looking for coding help. I would like to add the button that is on my “Newsletter” which subscribes customers to email marketing to my ‘Contact us’ button. I do not have coding experience so please could it be as easy to follow as possible.

I am using theme ‘Captial’.

Here is a picture of the coding as it is currently.

Thank you!!

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2

this may not be as straightforward as it seems, unless you are familiar with Shopify’s theme schema’s and liquid, it is hard to explain in a short forum post.

In essense you would want to create the code from scratch along with custom

theme settings, instead of trying to modify an existing theme block.