I added an opt-in check box under a contact form but when submitting on the form, it does not show up on the email result from the form; only name, email, phone number and message. What else do I need to do to make it functional? Below is a screenshot and the code used.
Opt-In to receive text messages from HTX Fluid Power at the phone number provided above.
Message frequency varies and may include order updates, product information/pricing, promotional products, etc. Message and data rates may apply. Opt-out at any time by replying 'stop' or 'unsubscribe'.