Back in Stock Alerts vs Mailchimp: Shopify Performance Comparison
⏳ Data pending for Mailchimp — our scanner captured only the async loader stub for this app. Full bundle metrics are being collected from live Shopify storefronts. Once available, this page will show a complete head-to-head comparison.
Both Back in Stock Alerts and Mailchimp provide email marketing and automation functionality for Shopify stores.
What We Know: Back in Stock Alerts (Benchmarked)
Back in Stock Alerts has been measured in StackConflict’s clean-room lab:
| Metric | Back in Stock Alerts |
|---|---|
| Overall Grade | C |
| JS Payload | 203.34 KB |
| CPU Desktop | 4 ms |
| CPU Mobile | 27 ms (0.0s) |
| Layout Shift | 0.0 |
Grade C indicates Back in Stock Alerts carries a significant JavaScript footprint. Check the full report for lighter alternatives in this category.
View full Back in Stock Alerts speed report →
Pending: Mailchimp
StackConflict’s scanner detected that Mailchimp uses an async JavaScript loader — a small stub that only initialises its full bundle on a real, authenticated Shopify storefront. This means our lab environment captured the tiny stub file only, not the production bundle that actually runs on live stores.
We are collecting real bundle data by scanning public Shopify storefronts. Once captured, the head-to-head metrics for Mailchimp will appear here automatically.
View Mailchimp on Shopify App Store →
About This Test
StackConflict measures each Shopify app in an isolated clean-room environment — a Playwright-controlled browser with no other scripts installed. V8 CPU cost is the ScriptDuration delta measured before and after bundle injection. Mobile CPU applies the standard 4× Lighthouse slowdown factor.
Back in Stock Alerts data from the StackConflict Lab (2026-05-30). Mailchimp data pending.