One connected stack for your store, your customers and your stock

We built custom apps for Shopware and BigCommerce that sync orders, customers, and behaviour into Klaviyo and Zoho CRM. Product inventory stays in Shopify. Marketing and sales teams work from one up-to-date customer view, with no manual exports.

ecommerce crm flow 1
PlatformsShopware, BigCommerce, Shopify
IndustryE-commerce / Retail
TimelineX months
ServicesApp development, CRM & API integration
Case study: E-commerce CRM integration

E-commerce apps that turn store data into customer relationships

We built custom apps for Shopware and BigCommerce that capture customer, order and behavioural data the moment it happens. The apps push it to Klaviyo for email and SMS automation and to Zoho CRM for sales follow-up, while Shopify stays the single source of truth for product inventory. One install per store, no manual exports.

Shopware AppBigCommerce AppKlaviyoZoho CRMShopify InventoryReal-time Sync

The challenge

Customer data lived in three places. Orders sat in Shopware and BigCommerce, marketing lists were exported into Klaviyo by hand, and the sales team kept spreadsheets before anything reached Zoho CRM. Stock in Shopify never matched what the storefronts were selling, so campaigns promoted sold-out products and leads went cold before anyone followed up.

Our solution

Native apps for Shopware and BigCommerce that listen to store events and sync them in real time. Every order, signup and abandoned cart becomes a Klaviyo profile and event, every customer becomes a contact or deal in Zoho CRM, and the apps read live Shopify inventory so marketing and sales always see what is actually in stock.

How it works

From storefront event to CRM record in seconds

Our apps sit between the storefronts and the tools your team already uses. Nothing is exported, re-keyed or out of date.

Storefronts
ShopwareStore app · orders, customers, carts
BigCommerceStore app · orders, customers, carts

Our custom apps

Installed once per store

  • Receive store events through webhooks
  • Match customers by email across stores
  • Map fields, tags and consent to each tool
  • Queue, retry and de-duplicate every sync
Destinations
KlaviyoProfiles, events, email & SMS flows
Zoho CRMContacts, deals, follow-up tasks
ShopifyLive inventory read · stock sync

5 ways the integration helps the store grow

One install per store. Zero manual exports.

The Shopware and BigCommerce apps connect storefronts, marketing and sales so every team works from the same live customer data, and inventory decisions are made on real numbers.

1

One customer record across every store

Every signup, order, refund and abandoned cart from Shopware and BigCommerce is captured the moment it happens and pushed to Klaviyo and Zoho CRM. Customers are matched by email, so a shopper who buys on both stores is one person with one history, not two records.

Marketing consent collected at checkout travels with the customer, so every message that follows is permission-based.

Key features
Real-time webhooksProfile matchingFull order historyConsent flagsMulti-store
2

Marketing that runs itself in Klaviyo

Store events arrive in Klaviyo as metrics, so welcome, abandoned-cart, post-purchase and win-back flows trigger automatically without anyone uploading a list.

Segments update as customers browse and buy, so campaigns always reach the right people with products that are actually available.

Key features
Abandoned cart flowsPost-purchase seriesWin-back campaignsDynamic segmentsEmail & SMS
3

A live sales pipeline in Zoho CRM

Each customer is created as a Zoho CRM contact with order value, products bought and lifetime spend. High-value or business orders open a deal and a follow-up task, so sales can act while interest is still high.

Order updates keep the record current, giving account managers the full picture before every call.

Key features
Contact syncDeal creationFollow-up tasksLifetime valueOrder timeline
4

Inventory that is always right

Shopify remains the single source of truth for products and stock. The apps read live inventory, so Klaviyo campaigns and CRM quotes never promote items that have sold out.

Low-stock alerts reach the team early, and product data stays consistent across every channel.

Key features
Shopify Admin APILive stock levelsLow-stock alertsProduct catalogue sync
5

Reliable, secure and easy to run

Installs use OAuth, so no API keys are shared by email. Queued delivery with automatic retries and duplicate protection keeps data consistent even when a third-party API is slow or down.

A simple dashboard shows sync status, volumes and errors for every connected store, and data handling is built for GDPR from day one.

Key features
OAuth 2.0Retry queueDuplicate protectionSync dashboardError alertsGDPR-ready
Results

What changed after launch

86%more repeat purchases from automated Klaviyo flows
12 hrssaved every week on manual exports and imports
200+storefronts connected to one CRM and marketing stack
<5 minfrom store event to CRM record

Why connect your store this way?

Save hours

No more CSV exports or copy-paste between tools.

Sell more

Timely, automated flows bring customers back.

Close faster

Sales sees every order and lead in Zoho CRM instantly.

Stay accurate

Live Shopify inventory across campaigns and quotes.

Scale confidently

Add new stores without adding manual work.

Our process

1

Discover

Mapped how orders, customers and stock moved between the stores, Klaviyo, Zoho and Shopify, and where data was lost or duplicated.

2

Design

Defined the data model and field mapping, then designed the app settings and sync dashboard with the marketing and sales teams.

3

Build

Built the Shopware and BigCommerce apps, connected the Klaviyo, Zoho CRM and Shopify APIs, and load-tested the sync.

4

Launch & improve

Installed on live stores, monitored sync health and refined flows and CRM rules using real customer data.

Tech stack

Shopware App SystemBigCommerce Apps APIKlaviyo APIZoho CRM APIShopify Admin APIWebhooksOAuth 2.0REST
Ready to connect your store?

Smarter customer data. Better campaigns. Built for growth.

We build Shopware, BigCommerce and Shopify apps that connect your store to the CRM and marketing tools your team already uses.

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