# Grow RCS subscribers with a sign-up form

Once you have the phone number of an Android device user, you'll be able to communicate with them via RCS by sending [campaigns](/applications/campaigns/campaigns.md) or [journeys](broken://pages/s7vKAR6krDvHsj9MnhC9).

[Sign-up forms](/applications/sign-up-forms/overview.md) are an easy way to collect phone numbers from people who sign up to your website.

<figure><img src="/files/vGxVmxR8rbNWoStFw6KB" alt=""><figcaption></figcaption></figure>

By adding a phone number collection step to your sign-up forms, you can easily and quickly grow your subscribers.

{% hint style="info" %}
For in-depth information on sign-up forms, visit the [sign-up form](/applications/sign-up-forms/overview.md) section of the docs.
{% endhint %}

## How to build a sign-up form to collect subscribers

Sign up forms can be completely customized to match your branding and website, and you can add images too to entice your customers.

Because we're building a sign-up form to collect phone numbers so that we can send RCS campaigns and/or journeys, you'll need to make sure you add a phone number block to your sign up form as you build it.

#### What you'll need

* An [RCS Agent](/applications/channels/channels/supported-channels/google-rcs/create-a-google-rcs-agent-and-install-google-rcs-as-a-channel.md) and [RCS installed as a channel](/applications/channels/channels/supported-channels/google-rcs/create-a-google-rcs-agent-and-install-google-rcs-as-a-channel.md#step-4-install-rcs-as-a-channel)

### Step 1: Create a list

The first thing you need to do is create a list. Once your sign-up form is live, every contact that submits the sign-up form will be added to this list. You can then use this list to send [campaigns](/applications/campaigns/campaigns.md) or trigger [journeys](broken://pages/s7vKAR6krDvHsj9MnhC9).

### Step 2: Build your sign up form

The next step is to build your sign-up form.

1. From the **Marketing** section of your workspace, go to **Sign-up forms** > **Create new sign-up form**.
2. Name your sign-up form and choose your default language.
3. &#x20;Under 'Which list should subscribers be added to?', select the list you created in Step 1 from the drop-down.
4. Choose if you want to install your sign-up form on an e-commerce store or on a website, then click **Create sign-up form**.
5. In the **Overview** panel on the left-hand side of your screen, click **Content**.<br>

   <figure><img src="/files/1lSVmJzoCLWOLSPW5CLF" alt=""><figcaption></figcaption></figure>
6. Click **Add new block**, and select **Phone**.\
   ![](/files/uJtroF38E1JkFp3MN37o)
7. Under 'Contact opt-in', select your RCS channel from the drop-down.
8. Use the settings in the panel to design the phone number block, then click the ← button to return to the form settings.
9. Continue to customize and style the rest of your sign-up form.
10. When ready, **Publish** and/or embed your form.

### What next?

#### Send a campaign

As users submit your sign-up form, they'll automatically be added to the list you selected during the set-up process. You can use this list to send a one-off RCS marketing campaign to that list.

{% content-ref url="/pages/JlsRc7YIxEXfSBnxqWo2" %}
[Send a campaign](/applications/campaigns/campaigns/quickstarts/send-a-campaign.md)
{% endcontent-ref %}

#### Trigger a journey

You can set up a journey to run automatically when a contact is added to the list that is connected to the sign-up form.

<div align="left"><figure><img src="/files/KWJ3A7pkF0fIQJcEnMck" alt="" width="375"><figcaption></figcaption></figure></div>

{% content-ref url="/pages/s7vKAR6krDvHsj9MnhC9" %}
[Broken mention](broken://pages/s7vKAR6krDvHsj9MnhC9)
{% endcontent-ref %}

{% content-ref url="/pages/43PbbufDaZ8maNrfyPL3" %}
[Broken mention](broken://pages/43PbbufDaZ8maNrfyPL3)
{% endcontent-ref %}


---

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