First, you'll want to go to your Shopify settings > Checkout and scroll down to Manage Checkout Language. Click on the Manage checkout language button.
Then search for "Checkout Marketing". In the field called Accept Marketing Checkbox Label, remove the following:
Once you remove that language, you can add new verbiage around email collection such as:
Keep me up to date on news and exclusive offers
You can then revert back to a pre-checked box since you're now collecting email. To do this go to Settings > Checkout and scroll down to the Email Marketing section. Make sure show sign-up option at checkout is checked and Preselect the sign-up option is checked. too
Let us know if you have any additional questions by reaching out to us in chat!