> For the complete documentation index, see [llms.txt](https://hifunnel.gitbook.io/hifunnel-help-center/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hifunnel.gitbook.io/hifunnel-help-center/documentation/marketing/forms/how-to-set-up-a-form-with-double-opt-in.md).

# How to Set Up a Form with Double Opt-In

Learn how to set up Double Opt-In on your Hifunnel Forms to verify email addresses and improve list quality.

**Double Opt-In** requires new subscribers to confirm their email address by clicking a verification link in an automated email before they are added as active subscribers to your contact list.

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### Single Opt-In vs. Double Opt-In

* **Single Opt-In**: Subscribers are instantly added to your active contact list as soon as they submit the Form. (Faster sign-up experience, higher conversion quantity).
* **Double Opt-In**: Subscribers receive a confirmation email and must click the confirmation button before being marked as **Subscribed**. (Higher email deliverability, protects against spam bots and fake emails).

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### Enabling Double Opt-In on a Form

{% stepper %}
{% step %}

#### Step 1: Navigate to Forms

Go to **Marketing > Forms** from your Hifunnel Dashboard.
{% endstep %}

{% step %}

#### Step 2: Select Your Form

Click on the Form you wish to edit.
{% endstep %}

{% step %}

#### Step 3: Choose Opt-In Setting

In the **Opt-In Settings** section, select **Double Opt-In** (Recommended for clean list maintenance).
{% endstep %}

{% step %}

#### Step 4: Customize Confirmation Email

Click **Edit Confirmation Email** to customize the email subject line, button text, and message body sent to unconfirmed subscribers.
{% endstep %}

{% step %}

#### Step 5: Save Settings

Click **Save** to activate Double Opt-In for all future form submissions.
{% endstep %}
{% endstepper %}

{% hint style="info" %}
Subscribers who have not yet clicked the confirmation link will appear with an **Unconfirmed** status in your Contacts manager.
{% endhint %}