Link a Klaviyo Form or Popup

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Postscript integrates with Klaviyo, allowing you to share information between the two solutions.

About Klaviyo

Klaviyo is an automated marketing campaign solution that focuses on email, social advertising, and analytics. By linking your Klaviyo account with Postscript, you can grow your SMS subscriber list through Klaviyo forms, popups, and email lists.

Once you've set up your Klaviyo integration, you can link Klaviyo forms and popups in Postscript.

Locate Your Form or Popup ID

Form and popup IDs live in Klaviyo. You'll need to know a form or popup ID in order to link it in Postscript.

To locate a form or popup ID, log into your Klaviyo account. Select Signup Forms in the side menu.

You have two options for locating a form or popup ID: viewing the form in edit mode or viewing the form analytics. We walk through both below.

View ID in Edit Mode View ID In Analytics Mode

On the Signup Forms page, locate the form or popup you want to link.

  1. On the far right of the form or popup name, select the three vertical dots to expand the options menu.
  2. Select Edit Form from the list.

Your form or popup ID shows in the URL address. In the above example, the URL is The form ID is Yahcj8. You'll copy and paste this ID into Postscript.

You can exit edit mode by selecting Exit in the top right corner of the page.

Once you have your form or popup ID, you can enter it in Postscript. Select Integrations in the side menu, then select your enabled Klaviyo integration. If you haven't enabled your Klaviyo integration, learn how to do so here.

On the Klaviyo integration page, select Add First Form toward the middle of the page.

A popup will appear in the center of your Postscript app. This is where you will enter the form or popup ID you copied from your Klaviyo account.

  1. Form ID. Enter the form or popup ID in the field provided.
  2. Compliance. Make sure you include TCPA-compliant language in your forms and popups, and that you link to your shop's Terms of Service and Privacy Policy where specified.
  3. Save & Certify. By selecting I certify TCPA Compliance you are linking your Klaviyo form in Postscript and confirming it meets TCPA compliance requirements.

Linked forms and popups appear below the Klaviyo Forms heading. You can add additional forms and popups by selecting Add New Form.

We recommend you test your form or popup once you've linked it in Postscript. Enter your phone number in the appropriate field and you should receive a double opt-in text asking you to Reply Y to subscribe.

Compliance Langauge Requirements

When collecting subscribers, the TCPA requires you to include necessary compliance language that informs visitors that they are opting into SMS messaging from your store.

Here's the TCPA-compliant language:

*I agree to receive recurring automated marketing text messages (e.g. cart reminders) at the phone number provided. Consent is not a condition to purchase. Msg & data rates may apply. Msg frequency varies. Reply HELP for help and STOP to cancel. View our Terms of Service and Privacy Policy.

You should now be all set to grow your SMS subscriber list with a Klaviyo form or popup!

Get Support

Have questions? Please feel free to reach out to our wonderful Support team at or via live chat. You can also submit a support request here!

Need ongoing channel strategy guidance? Please fill out this form and we'll connect you to one of our certified partners.

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