> Deprecated:
> The creation of new marketing activity app extensions is deprecated. Only existing extensions can still be managed. If you have an existing marketing activity app extension and would like to continue to manage it, please migrate it to CLI following the [migration guide](/docs/apps/build/marketing-analytics/marketing-activities/migrate-extensions).


> If you're building a marketing automation, then you shouldn't integrate your app as a marketing activity app extension. Instead, you should use a marketing automation [Flow action extension](/docs/apps/build/marketing-analytics/automations/create-marketing-automation-actions), which can be used in [Shopify marketing automations](https://help.shopify.com/manual/promoting-marketing/create-marketing/create-marketing-automations).


## Developer resources

For those who are continuing to manage existing marketing activity extensions, you may refer to the following resources.

<div class="resource-card-grid">
  <div>
  <a class="resource-card" href="/docs/api/marketing-activities/components" data-theme-mode="">
    <div class="resource-card__indicator-container"><img
     src="/assets/resource-cards/blocks"
     data-alt-src="/assets/resource-cards/blocks-dark"
     aria-hidden="true"
     class="resource-card__icon themed-image"></div>
    <h3 class="resource-card__title">
      Marketing activities components reference
    </h3>
    <p class="resource-card__description">Learn about the different components that you can use to build a marketing activity form.</p>
  </a>
</div>

<div>
  <a class="resource-card" href="/docs/api/marketing-activities/endpoints" data-theme-mode="">
    <div class="resource-card__indicator-container"><img
     src="/assets/resource-cards/rest"
     data-alt-src="/assets/resource-cards/rest-dark"
     aria-hidden="true"
     class="resource-card__icon themed-image"></div>
    <h3 class="resource-card__title">
      Marketing activities endpoints reference
    </h3>
    <p class="resource-card__description">Learn about the endpoints that you need to add to your app to support marketing activities.</p>
  </a>
</div>

<div>
  <a class="resource-card" href="/docs/api/marketing-activities/statuses" data-theme-mode="">
    <div class="resource-card__indicator-container"><img
     src="/assets/resource-cards/hearts"
     data-alt-src="/assets/resource-cards/hearts-dark"
     aria-hidden="true"
     class="resource-card__icon themed-image"></div>
    <h3 class="resource-card__title">
      Marketing activities statuses reference
    </h3>
    <p class="resource-card__description">Learn about the different statuses for marketing activities and how to handle them.</p>
  </a>
</div>

</div>