Why does confirmed opt-in matter and why can't I turn it off for checkout?


Confirmed opt-in (also known as double opt-in) allows brands to validate phone numbers entered at checkout, in popups, or via forms. This prevents someone from falsely opting in a different phone number or entering a number that can't receive SMS messages (i.e., a landline), and it keeps your subscriber list clean.

While you have the option to not enable confirmed opt-in for Postscript sources such as popups, keywords, or opt-in links, it is required and enforced by Shopify in their checkout collection process.


  • Enable Confirmed Opt-In. Learn the value of confirmed opt-in and how to enable it for your Postscript opt-in sources (e.g., popups, keywords, and opt-in links).

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