Quick Answer: The most common mistakes to avoid after setting up a Shopify store are leaving shipping rates at default placeholder values, never testing the checkout flow yourself, ignoring abandoned cart emails, and adding too many apps at once without measuring what each one actually does. This exact post-launch confusion shows up on Reddit's Shopify communities constantly. Here's the specific fix list, not vague "optimize your store" advice.
Reddit's Shopify communities are full of new store owners asking what to fix after launch, usually after noticing sales are lower than expected. I want to walk through the specific, checkable mistakes — not generic optimization advice.

Mistake One — Default Shipping Rates Left Unchanged
Key Takeaway: Shopify's placeholder shipping rates rarely match real carrier costs — check this before your first real order.
New stores frequently launch with shipping rates still set to generic defaults that don't reflect actual carrier costs for the products being sold. This either eats into margin silently or overcharges customers enough to cause checkout abandonment. Check your shipping settings against real carrier rates for your actual product weights before you consider the store fully launched.
Mistake Two — Never Personally Testing Checkout
Key Takeaway: Add a product to cart and complete a real test purchase — this catches problems no amount of admin-panel checking will reveal.
Run a full test order through your own store as if you were a customer, ideally on mobile. This single check catches broken discount codes, confusing shipping options, or payment steps that don't work as expected — issues that only show up from the customer's actual path, not from browsing your own admin panel.
| Mistake | Quick Fix |
|---|---|
| Default shipping rates | Update to match real carrier costs |
| Untested checkout | Run a real test order on mobile |
| Ignored abandoned carts | Confirm the recovery email is active |
| Too many apps at once | Add one at a time, measure impact |
How to Optimize an Already Set Up Shopify Store for Better Sales
Key Takeaway: Confirm your abandoned cart email is actually active — this alone recovers meaningful revenue silently lost otherwise.
Abandoned cart recovery emails typically fire within an hour of someone leaving items unpurchased, recovering a real share of sales that would otherwise disappear entirely. Many new store owners never verify this automation is actually turned on and correctly connected. Check this specifically — it's one of the highest-leverage, lowest-effort fixes available. Our post on what should be included in email automation covers exactly what a working setup looks like.
Best Apps to Enhance a Shopify Store Already Set Up
Key Takeaway: Add apps one at a time and measure the effect — stacking several at once makes it impossible to know what's actually helping.
Reviews apps, upsell tools, and email marketing platforms can genuinely help, but adding several simultaneously right after launch makes it impossible to isolate what's actually working. Add one, give it two weeks to show measurable impact, then decide on the next. This disciplined approach also keeps monthly app costs from creeping up faster than the revenue they're generating.

Want a store where these fixes are already handled? Browse EcomChief's catalog — shipping, checkout, and email automation are verified before listing.
A Store Where These Mistakes Are Already Fixed
Key Takeaway: Shipping rates, checkout, and email automation verified before you ever see the listing.
The stores in EcomChief's catalog are built using the exact method described in this post. Not templated. Not assembled from a page builder. Custom sections, locked design systems, production-ready — the same standard I hold my own theme to. Every store starts at $99, with an optional $148 traffic package if you want marketing support from day one. If you want to own a store built this way without spending months developing the method yourself, this is where to start.
The Bottom Line
Key Takeaway: Check shipping rates, test checkout yourself, verify email automation is active, and add apps one at a time.
Most post-launch problems are small, checkable things — default shipping rates, an untested checkout, an inactive abandoned cart email. Fix these four specifically before assuming something bigger is wrong with the store.
Helpful EcomChief Resources
Key Takeaway: Quick links to browse, fix, and get answers.
Here are useful links:
- Browse All Businesses — From $99
- What's Included
- Talk to Us Before You Buy
- What's Included in a Ready-Made Store
- Why Do 90% of Dropshipping Stores Fail
Ready to skip these fixes entirely? Browse the catalog.
