Hi ​@davidjames874 - thanks for your question to the community. Here is what I’d recommend.

Form Design & UX Tweaks

1. Split the Forms: Try separating the email and SMS sign-up into a two-step process.
   • Step 1: Email only.
   • Step 2: Phone number + SMS consent.
   • This reduces friction and primes users for the second step with an initial micro-commitment.

2. Incentivize SMS Separately: Offer a distinct incentive for SMS (e.g. “Get 15% off + exclusive VIP text-only offers”).

   • Make sure it feels exclusive and valuable enough to justify the opt-in.

3. Visual Hierarchy: Increase visibility of the phone field and consent checkbox.

   • Use icons, contrasting colors, and proximity to draw the eye to SMS sign-up.

   • Place SMS language above the phone field, not below.

Copywriting Tips

1. Reword Consent Copy to make it sound beneficial, not just legal.

   • Instead of: “By checking this box, you agree to receive SMS…”

   • Try: “Yes! I want early access to drops & VIP-only texts”

2. Use Social Proof or Urgency: “Join 20,000+ VIPs who get first dibs via text.”

Testing Idea

• Delay SMS Ask: Trigger a follow-up modal or slide-in for SMS 10–15 seconds after email entry.

If your audience skews mobile, test mobile-optimized forms heavily, spacing, click areas, and autofill behaviors can impact form completion and consent.

Hi,

Thanks for the great tips! I love the two-step form and urgency copy ideas. For the delayed SMS modal, how do you set the 10-15 second trigger in Klaviyo’s form builder? Also, any specific mobile optimization settings you’d recommend for Shopify?

Best,

​@davidjames874 | Founder of  The Yes No Button 

Hey ​@davidjames874,

When you mention that only 20% of people who provide their numbers end up as consented to SMS, do you mean that there appears to be an error in your form that causes profiles to not be consented to SMS, or just that you’re struggling to get people to consent, and were looking for strategy tips? 

If it’s the latter, Zac had some great tips. If the form seems buggy, and you have examples of profiles you believe consented to SMS, but weren’t given SMS consent, let us know, and we can work on this.

Thanks for clarifying! It’s not a buggy form—just struggling to get more than 20% to consent to SMS. Zac’s tips were helpful Any other strategies to boost consent rates, like specific incentives or copy tweaks?

Best,
David James