Shopify App Comparison 2026
Happy Birthday Emails by UW vs Mysbox ‑ Mystery Box Builder: Shopify App Comparison (2026)
Happy Birthday Emails by UW
Mysbox ‑ Mystery Box Builder
Which Shopify upsell app increases AOV more? Compare pricing, features, ratings & real merchant reviews for Happy and Mysbox ‑ Mystery Box Builder to find the best fit for your store.
Celebrate birthdays with personalised emails and discount codes. Collect birth dates, build loyalty, and drive repeat sales with Happy Birthday Email.
View Full DetailsKey Features
- Send birthday emails with personalised messages and discounts
- Run a birthday loyalty campaign with zero ongoing effort
- Collect birthdays and age data at checkout, POS, or landing pages
- Works with your email platform or sends happy birthday emails for you
- Populates Shopify’s customer birthday metafield
Boost sales and clear inventory with mystery box campaigns. Engage customers and drive repeat purchases. Install Mystery Box Builder free on Shopify.
View Full DetailsKey Features
- Create flexible single-item boxes or mystery boxes bundles easily.
- Let customers unbox online w/ fun animations or resell at your trading price.
- Automatically calculate odds and enable unique item guarantees per order.
- Fast unboxing with multi-unbox or auto-unbox options to control stock better.
- Personalize box design, pre-unbox & unbox animations to match your brand style.
Happy vs Builder — Side-by-Side Feature Comparison
Wondering which app offers the features you actually need? This feature-by-feature breakdown shows exactly where Happy and Mysbox ‑ Mystery Box Builder differ — so you can make an informed decision for your Shopify store.
| Feature | Happy Birthday | Mysbox ‑ Mystery |
|---|---|---|
| Free plan available | ||
| Built for Shopify | ||
| 24/7 support | ||
| Multi-language | ||
| Mobile-optimized | ||
| Analytics dashboard | ||
| API access | ||
| Custom branding |
Integration & Compatibility Comparison
App integrations matter — especially when you're running multiple tools in your Shopify stack. Here's what each app connects with out of the box.
Happy Birthday Emails by UW
- Customer accounts
- Shopify POS
- Shopify Flow
- Shopify Admin
- Klaviyo
- Mailchimp
- omnisend
- Privy
Supported Languages
English
Mysbox ‑ Mystery Box Builder
- Checkout
- Customer accounts
- Shopify Flow
- Shopify Admin
- Koin Store Credit & Cashback
Supported Languages
English and Japanese