COD Checkout on Shopify: Apps, One-Step Form, and Phone Validation
Diego Gomes · 2026-10-07
Why the default checkout kills COD
Shopify’s default checkout is generally optimized for card payments, which can discourage COD (Cash on Delivery) purchases. This happens because:
- The process can be long and complicated, leading customers to abandon their purchase.
- The lack of clear COD options can create uncertainty and questions.
- Customers don’t see paying cash on delivery as a priority, especially in lower-priced product categories.
Form on the product page itself
Adding a simplified checkout form right on the product page can increase conversions. This allows customers to:
- Enter essential details, like their name, phone number, and address, without leaving the page.
- Enjoy a smoother, faster shopping experience.
- Feel that the buying process is more accessible and less intimidating.
Phone number and zip code validation
Validating phone numbers and ZIP codes is crucial for reducing delivery issues and building customer trust. Do it efficiently:
- Use an app that validates phone numbers in real time, preventing errors that can lead to failed deliveries.
- Validate the ZIP code before checkout is complete, making sure delivery is possible in the location provided, which reduces the risk of cancellations.
Upsell before confirming
Adding an upsell option before the order is confirmed can increase average order value. Some strategies include:
- Offering relevant complementary products on the checkout page.
- Creating promo bundles that encourage customers to buy multiple items.
- Using a subtle pop-up to suggest an upgrade or add-on, while keeping the user experience in mind.
What to measure: form started → submitted rate
Tracking the form conversion rate is essential for optimizing the process. Measure:
- The percentage of users who start filling out the form compared with those who actually submit it.
- Analyzing where users drop off can help identify friction points.
- Running A/B tests on different layouts and messaging can help increase this rate.
To maximize COD sales on Shopify, focus on simplifying the process, validating information, and offering upsell opportunities. What’s your conversion rate from form starts to submissions?