To do this, visit:
Settings > Checkout and scroll to the Checkout language area.
Click on Manage checkout language.
Look for Accept marketing checkbox label via search or scroll down until you find Checkout marketing
In the field labeled Accept marketing checkbox label, copy the text below and paste it into the box where prompted:
I agree to receive marketing text messages and emails from [BRAND_NAME]
Next step - Obtain the customer’s phone number (Step 3)