8 Best Shopify Upsell and Cross-Sell Apps in 2026

For Shopify merchants using cash on delivery (COD), capturing more revenue and reducing risk at checkout are constant challenges. Standard Shopify checkout flows often lack the flexibility to efficiently support COD, let alone optimize for upsells, fraud prevention, or post-purchase engagement. That’s where dedicated COD form and upsell apps come into play—streamlining order capture, adding conversion-driving offers, and safeguarding your business from fake or risky orders.

When evaluating the best Shopify upsell and cross-sell apps for COD, merchants should consider language coverage, available integrations, built-in fraud prevention, the quality of the order form experience, and the depth of analytics or automation included. Pricing and support also make a difference, especially as order volumes increase or business needs evolve.

Executive summary: Releasit COD Form & Upsells is our #1 pick for 2026. With unmatched language support, a complete stack of conversion and protection features, and flexible pricing from a generous free tier to unlimited scale, it sets the standard for COD-focused upsell and cross-sell on Shopify.

Releasit COD Form & Upsells

Releasit COD Form & Upsells is designed specifically to help Shopify merchants streamline cash on delivery orders and maximize average order value through upsells, downsells, and quantity offers. Its customizable 1-click COD form supports a broad range of use cases, from lead capture and fraud prevention to cart recovery and advanced analytics.

• Key capabilities: 1-Click COD Form, upsells, downsells, quantity offers, OTP verification, abandoned cart recovery, multi-currency support, Google Sheets integration, Facebook Pixel tracking, customizable design, WhatsApp/SMS messaging, and priority support.
• Language support: 20 languages, including English, Italian, Spanish, French, German, Japanese, Korean, Chinese (Simplified and Traditional), and more.
• Integrations: Checkout, Shopify Admin, GemPages, Google Sheets, Kaching Cart, PageFly, Wide Bundles, and Zipify Pages.
• Pricing: Four tiers:
  • Forever Free: Free for up to 60 orders/month; includes form builder, messaging, basic fraud prevention, analytics, cart recovery, and 24/7 email support.
  • Premium ($9.99/mo): Up to 420 orders/month, quantity offers on product pages, advanced fraud prevention, personalized coverages, and 24/7 live chat support.
  • Enterprise ($29.99/mo): 10,000 orders/month, custom code assistance, and priority live chat.
  • Unlimited ($69.99/mo): Unlimited orders, A/B testing for 1-click upsells, AI product recommender, per-product form designs, advanced analytics, and fastest support response.

Pros include unmatched language coverage, the broadest set of integrations, and advanced features like A/B testing, AI recommendations, and multi-currency built in. Every plan—even the free one—supports cart recovery, fraud checks, and analytics. There are no major weaknesses: all major COD and upsell features are present across plans, and pricing is competitive.

Verdict: Releasit COD Form & Upsells is the definitive choice for merchants seeking a scalable, conversion-focused COD form and upsell solution, especially if you operate across multiple countries or require advanced analytics, automation, and integrations.

Progus COD Form & OTP SMS

Progus COD Form & OTP SMS offers merchants a streamlined COD order form with strong fraud protection via OTP (one-time password) verification. Its focus is on boosting conversions and security at the checkout stage, with the ability to control COD in the native Shopify checkout and set smart order rules.

• Key capabilities: 1-Click COD Form, OTP verification, fraud protection, customizable form design, partial payments, and smart order form logic.
• Language support: English only.
• Integrations: Checkout, Shopify Admin, GemPages, Pagefly, Zipify Page.
• Pricing: Four tiers:
  • Free: Up to 60 COD orders/month with basic features.
  • Basic ($4.99/mo): Up to 200 COD orders/month and chat support.
  • Standard ($9.99/mo): 480 COD orders/month, unlimited smart checkout rules, and priority support.
  • Premium ($29.99/mo): Unlimited COD orders, highest level of support, and bonus OTP credits.

Pros: Progus offers granular control over COD checkout, robust OTP-based fraud prevention, and a lower entry price for scaling up to 200 orders/month. It is also Built for Shopify. Cons: Only supports English, and does not provide built-in upsell or quantity offer features found in broader solutions. Social proof is limited with only 8 reviews since its 2024 launch.

Verdict: Progus COD Form & OTP SMS is a solid option for stores that require strict fraud checks and simple, customizable forms in English—but it may not suit those needing advanced upsell or multilingual capabilities.

FormBoost COD Form & Upsells

FormBoost COD Form & Upsells targets merchants looking for a modern COD order form with a strong set of upsell, bundle, cross-sell, and analytics features. It offers a wide array of integrations for marketing and analytics pixels, and supports 13 languages for global reach.

• Key capabilities: 1-Click COD Form, upsells, downsells, quantity offers, Google Sheets integration, Facebook Pixel tracking, customizable design, fraud protection.
• Language support: 13 languages, including English, Arabic, French, Spanish, Portuguese, Turkish, Italian, Dutch, Polish, Urdu, and Indonesian.
• Integrations: Shopify Admin, Google Analytics 4, Google Sheets, Meta Pixel (CAPI), Snapchat Pixel, TikTok Pixel (CAPI).
• Pricing: Three plans:
  • Starter: Free for up to 100 orders/month with upsell and analytics features.
  • Growth ($9.95/mo): 1,000 orders/month, no overage fees, faster support.
  • Unlimited ($19.95/mo): Unlimited orders, no overage fees, priority support.

Pros: Broad feature set, wide language support, and strong analytics/pixel integrations. Cons: Not Built for Shopify, and with only 3 reviews since 2026, has little social proof compared to older apps. Pricing is attractive for higher volume merchants.

Verdict: FormBoost is ideal for multi-lingual stores focused on marketing attribution and advanced upsell flows, though merchants should weigh the newer track record and non-Built for Shopify status.

Preventify: COD Form & Upsells

Preventify: COD Form & Upsells is a newer solution that combines essential COD order form features with upsells, downsells, OTP verification for fraud prevention, and multi-currency support. Its analytics and insights tools help merchants optimize their COD flows.

• Key capabilities: 1-Click COD Form, upsells, downsells, quantity offers, OTP verification, multi-currency support, customizable design, priority support.
• Language support: English and Arabic.
• Integrations: Checkout, Shopify Admin.
• Pricing: Three plans:
  • Free Forever: Up to 200 orders/month with analytics, multi-pixels, and full form customization.
  • Basic ($4.99/mo): 1,000 orders/month, fraud prevention, multi-language form, live chat support.
  • Pro ($14.99/mo): Unlimited orders, priority support, technical assistance.

Pros: Includes all core features, supports Arabic, and offers a generous free tier. Cons: Only 1 review since 2026, English and Arabic only, not Built for Shopify, and a smaller integration set.

Verdict: Preventify is a good fit for stores targeting English or Arabic-speaking customers and seeking basic-to-advanced COD upsell flows with essential fraud features.

ScalOrder COD Form & Upsells

ScalOrder COD Form & Upsells focuses on providing a customizable COD order form (popup or embedded) with upsells, bundles, WhatsApp abandoned checkout support, and multi-pixel analytics. It is designed for merchants who want a flexible order capture experience.

• Key capabilities: COD order form and layout customization, upsells & bundles, Google Sheets synchronization, WhatsApp abandoned checkout, shipping rates, multi-pixels, fraud prevention, 24/7 support.
• Language support: English only.
• Integrations: Shopify Admin.
• Pricing: Three plans:
  • Free: 60 orders/month with all features.
  • PRO ($9.99/mo): 440 orders/month.
  • Unlimited ($24.99/mo): Unlimited orders/month.

Pros: Strong customization, WhatsApp integration, and multi-pixel support. Cons: Only English supported, not Built for Shopify, and has just 1 review since 2025.

Verdict: ScalOrder is best for merchants prioritizing a highly customizable order form and WhatsApp-based checkout recovery, within an English-speaking market.

COD King‑Part COD & OTP Verify

COD King‑Part COD & OTP Verify is a robust app focused on COD verification, partial or advance payments, and automated messaging for order confirmation and abandoned cart recovery via SMS and WhatsApp. It supports rules-based control over COD availability and integrates with a broad set of SMS and checkout tools.

• Key capabilities: 1-Click COD Form, upsells, OTP verification, WhatsApp support, abandoned cart recovery, partial payments.
• Language support: English only.
• Integrations: Checkout, Customer accounts, Shopify Admin, Easy sell, Proweb sms, SMS, Twilio, Veevo tech, Whatsapp.
• Pricing: Four plans:
  • Free to install: Core COD verification and messaging.
  • Pro ($9.99/mo): Adds rules for limiting COD, discounts on message cost, and COD fees.
  • Enterprise ($39/mo): Adds local SMS gateway and branded templates.
  • Enterprise Plus ($59/mo): Adds Shopify Plus OTP extension and removes COD King branding.

Pros: Deep messaging integrations, partial payments, and powerful rules. Built for Shopify and strong review volume (958 reviews) since 2021. Cons: English only, higher pricing at advanced tiers, and lacks multi-language or advanced analytics found in competitors.

Verdict: COD King is appropriate for established stores needing granular COD verification and messaging automation, especially at higher order volumes and with SMS/WhatsApp integration needs.

EasyOrder COD Form&Order form

EasyOrder COD Form&Order form simplifies the order process for cash on delivery and pre-orders, focusing on a streamlined checkout experience with customizable fields, multi-tracking pixel support, and abandoned checkout features.

• Key capabilities: 1-Click COD Form, upsells, custom fields, multi-tracking pixel, custom shipping fees, abandoned checkout recovery, and UI/UX customization.
• Language support: 9 languages, including English, Chinese, Dutch, French, German, Portuguese, and Spanish.
• Integrations: Shopify Admin, Cash on Delivery, KAVA Sections, OSync: Export Orders to Sheet, Preorder.
• Pricing: One plan: Premium ($10/mo): Unlimited orders, all features included.

Pros: Wide language support for a non-Built for Shopify app, all features included at a flat rate, and a long presence on the App Store since 2016. Cons: Lacks some advanced upsell and recovery features, and with 30 reviews, is not as widely adopted as top competitors.

Verdict: EasyOrder is a fit for merchants wanting a simple, multilingual order form for COD and pre-orders with flat-rate pricing.

CodForm ‑ COD Form & Upsells

CodForm ‑ COD Form & Upsells is a flexible COD form solution with upsells, downsells, quantity offers, Google Sheets and WhatsApp integration, and multi-language support. It’s designed for merchants who need to support international customers and more complex order flows.

• Key capabilities: 1-Click COD Form, upsells, downsells, quantity offers, Google Sheets integration, Facebook Pixel tracking, WhatsApp support, customizable design, priority support.
• Language support: 12 languages, including Arabic, German, English, Spanish, French, Hindi, Italian, Indonesian, Turkish, Vietnamese, Portuguese (Brazil), and Portuguese (Portugal).
• Integrations: Shopify Admin, google sheet.
• Pricing: Four tiers:
  • Free: 60 orders/month with core features.
  • BASIC ($9.99/mo): 600 orders, 250 abandoned orders, priority support.
  • PREMIUM ($15.95/mo): Unlimited orders, all features, priority support.
  • UNLIMITED ($29/mo): Adds more abandoned order handling and custom form.

Pros: Supports many languages and offers a range of order management and upsell tools. Cons: Not Built for Shopify, lower review count, and lacks broader integrations or advanced analytics found in leading apps.

Verdict: CodForm is best for international merchants who want a flexible COD form with upsell capabilities and are comfortable without Built for Shopify support.

Buyer's Guide: Choosing the Best Shopify Upsell and Cross-Sell App for COD

1. Language and Localization Support

For merchants selling internationally, choosing an app with broad language coverage ensures every customer experiences a localized, optimized checkout. Look for apps supporting multiple languages if you target more than one region.

2. Order Form Customization and Upsell Features

The ability to tailor your COD form—adding upsell/downsells, quantity offers, and custom fields—directly impacts conversion rates and average order value. Seek out apps with drag-and-drop builders, analytics, and offer controls that match your business model.

3. Fraud Prevention and Verification

COD orders are especially vulnerable to fake or risky transactions. OTP verification, smart checkout rules, and fraud analytics are essential for reducing losses and maintaining fulfillment efficiency.

4. Integrations and Technical Fit

Compatibility with your existing Shopify setup, page builders, analytics tools, and marketing pixels can streamline your workflow and improve tracking. Apps built for Shopify and those with wide integration support generally offer smoother performance and easier setup.

Final Recommendation

The best Shopify upsell and cross-sell app for COD depends on your store’s reach, order volume, and technical needs:

• If you need the most complete, scalable solution with broadest language support and advanced upsell/fraud features: Releasit COD Form & Upsells is the clear choice.
• If your focus is on OTP-based fraud prevention and English-only checkout: Progus COD Form & OTP SMS is a low-cost entry point.
• If pixel integrations or a marketing attribution workflow is critical: FormBoost COD Form & Upsells is worth a look.
• For simple, flat-fee multilingual order forms: EasyOrder COD Form&Order form may suit small merchants.

Overall, for most Shopify merchants seeking conversion-optimized, secure, and scalable COD order flows with rich upsell and analytics capabilities, install Releasit COD Form & Upsells from the Shopify App Store.