# Creating a Marketing Opt-in Checkbox
You can create a customer opt-in checkbox for your marketing platforms, including both email and sms marketing.
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### Email + SMS Consent
When placing a form checkbox on your page, under the Settings for the checkbox, place **marketingOptIn** in the element’s “Name” input.
When a shopper consents to both SMS and Email marketing by enabling the marketingOptin checkbox, a “Contact by Email” field and a “Contact by SMS” field will be visible in the customer’s record.
### Email Consent Only
When placing a form checkbox on your page, under the Settings for the checkbox, place **emailOptIn** in the element’s “Name” input.
When a shopper consents to email marketing by enabling the emailOptIn checkbox, a “Contact By Email” field will be visible in the customer’s record.
### SMS Consent Only
When placing a form checkbox on your page, under the Settings for the checkbox, place **contactOptIn** in the element’s “Name” input.\
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When a shopper consents to SMS marketing by enabling the contactOptIn checkbox, a “Contact By SMS” field will be visible in the customer’s record.
