> For the complete documentation index, see [llms.txt](https://www.locksmith.guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.locksmith.guide/keys/more/newsletter-keys.md).

# Newsletter keys

Locksmith allows you to integrate directly with either **Mailchimp** or **Klaviyo**. When setup, Locksmith will ask customers for an email address when they arrive on a locked page. Once the email is entered, a customer is immediately granted access, and Locksmith will automatically send the subscription information to the corresponding service.

![](/files/1onUSNeUaUHZ28DKy2Hi)

{% hint style="info" %}
**Note**: Mailchimp and Klaviyo both have their own policies regarding double opt in, and it is typically enabled by default. This setting is adjusted in your Mailchimp or Klaviyo dashboards - it is not a setting that is controlled by Locksmith.
{% endhint %}

## Mailchimp

Detailed information on how to setup Mailchimp can be found here:

{% content-ref url="/pages/1gBNBlY4Klt4vAB8hcIc" %}
[Use Mailchimp to collect customer emails](/tutorials/more/mailchimp.md)
{% endcontent-ref %}

## Klaviyo

If using Klaviyo, you have the option to simply request that visitors subscribe in order to gain access:

{% content-ref url="/pages/z1IVLGpbpnWnaD5XQ6MI" %}
[Grow your subscriber lists with Klaviyo](/tutorials/more/klaviyo.md)
{% endcontent-ref %}

Or, you can also use Klaviyo to grant access only to those who are *already* subscribed to a specific list in your Klaviyo account:

{% content-ref url="/pages/77iwUv68N0neEBD4ZfM9" %}
[Use a Klaviyo list or segment as an access control list](/tutorials/more/use-a-klaviyo-list-or-segment-as-an-access-control-list.md)
{% endcontent-ref %}

## Using your default Shopify mailing list

Shopify ships out of the box with a marketing mailing list service. If you would like to use Locksmith to grant access to those who have already subscribed to this, you can do so using a custom Liquid key condition.

This is slightly different than the above options, in that **it will only grant access to a signed in customers - if the customer is already subscribed**! To start, check out our guide on this here:

{% content-ref url="/pages/ve2JX4pz2jetN297ciB6" %}
[Custom Liquid key-condition basics](/keys/more/custom-liquid-key-condition-basics.md)
{% endcontent-ref %}

The condition you're looking for is:

`{% if customer.accepts_marketing %}`

When set up, this will present the customer will the regular prompt to sign in (as opposed to the subscription prompt):

![](/files/VQwivnx6b2jpZMbm3Baj)

If desired, you can adjust your message prompt to direct your customers to the page footer(in most stores) to subscribe to your newsletter. More information on editing messages here:

{% content-ref url="/pages/YN4tss8Ren6LqyAQ78LD" %}
[Customizing messages](/tutorials/more/customizing-messages.md)
{% endcontent-ref %}

## Using other mail services

Locksmith does not support other mail services at this time.

However, if you have a mail service that automatically tags customers that are subscribed, you can use Locksmith to check for a customer tag:

{% content-ref url="/pages/vojen44dvTjRpsHujhOA" %}
[Customer account keys](/keys/customer-account-keys.md)
{% endcontent-ref %}

Please feel free to contact us via email at **<team@uselocksmith.com>** if you have any questions!

### Related pages:

{% content-ref url="/pages/7PIPytApjJcujLf3YPWc" %}
[Why isn't my passcode, secret link, newsletter, or location key working?](/faqs/more/why-isnt-my-remote-key-condition-working.md)
{% endcontent-ref %}


---

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