> ## Documentation Index
> Fetch the complete documentation index at: https://help.retainful.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Signup forms overview

> Grow your email list with popups, exit-intent forms, and embedded signup forms on your storefront.

Signup forms turn anonymous store visitors into subscribers you can market to. Retainful's form builder creates popups and embedded forms that run on your storefront — no code required.

## Form types

| Type            | How it appears                                                 | Best for                                               |
| --------------- | -------------------------------------------------------------- | ------------------------------------------------------ |
| **Popup**       | Opens over the page after a trigger you choose (time, scroll). | General list growth with a welcome offer.              |
| **Exit intent** | Appears when the visitor moves to leave the page.              | A last-chance offer before they go.                    |
| **Add to cart** | Appears when a shopper adds an item to their cart.             | Capturing email early so cart recovery can reach them. |
| **Embedded**    | Sits inline in your page content — footer, blog, landing page. | Always-available signup without interrupting anyone.   |

## How a form grows your list

1. A visitor sees your form and enters their email (and anything else you ask).
2. They're created as a contact and added to the [list](/audience/lists) you chose — with [double opt-in](/audience/contacts#single-vs-double-opt-in) if you've enabled it.
3. If the form offers a discount, they see their coupon right away.
4. Joining the list can [trigger your welcome automation](/automations/triggers) — so the relationship starts immediately.

## Requirements

Forms display on your storefront through your store connection:

* **Shopify** — enable the [theme app extension](/integrations/shopify#theme-app-extension). If a form isn't appearing, the popup requirements check on the Shopify integration page tells you what's missing.
* **WooCommerce** — forms are served through the [Retainful plugin](/integrations/woocommerce).

## Guides

<Columns cols={2}>
  <Card title="Create a form" icon="square-plus" href="/forms/create-a-form">
    Pick a template, design it, connect a list.
  </Card>

  <Card title="Use cases" icon="lightbulb" href="/forms/use-cases">
    The forms worth building first — and the offer that makes each one convert.
  </Card>

  <Card title="Display rules" icon="crosshairs" href="/forms/display-rules">
    Control when, where, and to whom your form appears.
  </Card>

  <Card title="Form analytics" icon="chart-line" href="/forms/analytics">
    Views, submissions, and conversion rate.
  </Card>
</Columns>