> ## Documentation Index > Fetch the complete documentation index at: https://help.emotive.io/llms.txt > Use this file to discover all available pages before exploring further. # Collect SMS Opt-Ins at BigCommerce Checkout > Grow your list by adding an SMS Opt-In checkbox in your BigCommerce Checkout. Looking to get SMS opt-in from your BigCommerce Checkout page so you can grow your list and trigger Abandoned Checkout campaigns? We can help. Submit your request to your Customer Success Manager. ## Getting Set Up Log into your BigCommerce Portal and navigate to **Settings > Advanced > Data Solutions** to turn on your Site Verification Tags. bigcommerce settings nav Then, you will be provided a javascript specific to your site to paste into the Site Verification Tag Header. site verification tag insert Once saved, you should find the SMS opt-in consent checkbox in your Checkout page. See below for example. sms collection at bigcommerce checkot If your customer enters their phone number and has the checkbox marked, this will help grow your subscriber list.