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ERP ⇄ Business productivity

Linnworks to Resend integration — real-time, two-way sync

Keep Linnworks and Resend in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.

  • SOC 2 and 6 other compliance frameworks
  • POC with real engineers in minutes

Adopted by fast-scaling companies moving mission-critical data in real time

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Migrated from Mulesoft
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Why teams connect Linnworks and Resend

Bridge the tools people work in and the system the business runs on: real-time, two-way sync between Resend and Linnworks.

The ERP holds the records the business is run on, and it is rarely where day-to-day work happens. Resend is closer to the work, and the two often need the same facts about the same people, organizations, and transactions. Bridging them by hand, or by nightly file transfer, leaves each side out of date for hours at a time.

Stacksync syncs Emails, Contacts, Audiences, Broadcasts in Resend with Stock Levels, Locations, Purchase Orders, Suppliers in Linnworks bi-directionally and in real time, with field-level mapping and rules for which system wins on conflict. Changes made where the work happens reach the system of record within seconds, and the reverse.

Common use cases

  • Keep suppression and unsubscribe state synced between Resend and other marketing tools to stay compliant.
  • Feed open and click events into a warehouse for engagement analytics alongside product data.
  • Keep stock levels consistent between Linnworks and external systems so multichannel listings stay aligned with sellable stock
  • Mirror processed orders, refunds, and returns into a warehouse for margin reporting across channels

Where Linnworks is the HR or people system of record

Worker and organization data from Linnworks stays current in Resend, so the tools people use daily reflect the org as it actually is.

Master data corrections travel

A customer, supplier, or contact detail corrected in either system updates the other, ending duplicate maintenance.

Where Resend faces customers and Linnworks carries account records

Order, invoice, or account status from Linnworks appears alongside the customer in Resend, so front-line teams answer from live data.

What you can sync between Linnworks and Resend

Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.

Linnworks objects Resend objects
Purchase Orders Replenishment POs sync with suppliers and accounting systems. Email events Delivered, bounced, complained, opened, and clicked events emitted via webhooks and written back to source systems.
Suppliers Vendor records keep procurement data consistent across tools. API keys Scoped credentials managed per environment for send and read access.
Channel Listings Marketplace and webstore listing mappings tie channel products to internal SKUs. Emails Sent messages retrievable by ID with current delivery status.
Returns & Refunds Post-sale records flow to finance and support systems. Contacts Recipient records with email, name, and subscription state, synced from CRMs or databases.
Shipping Services Carrier and service definitions support label and tracking data in order syncs. Audiences Named contact lists that broadcasts target; typically mirrored from CRM segments.
Open Orders Unshipped orders aggregated from sales channels sync into ERPs and fulfillment systems. Broadcasts One-to-many campaign sends addressed to an audience.
What ships with Linnworks ⇄ Resend

Connect Linnworks and Resend for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Linnworks–Resend connection.

Real-time

Two-way sync

Changes in Linnworks or Resend instantly reflect in both systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Linnworks or Resend data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.

At scale

Event queues

Handle millions of events per minute without losing a single Linnworks or Resend record.

Observability

Monitoring

Track your Linnworks ⇄ Resend sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions between Linnworks and Resend.

How the Linnworks and Resend connectors work

Linnworks

Integration surface
REST API
Authentication
Application credentials and an install token exchanged for a session token
Change detection
Polling on order and stock endpoints
Capabilities
read · write
Rate limits
Per-endpoint rate limits apply on the Linnworks API

Resend

Integration surface
REST API
Authentication
API key (Bearer token)
Change detection
Webhooks for email lifecycle events; polling for contact and audience state
Capabilities
read · write · webhooks
How it works

How to connect Linnworks to Resend — three steps, no code

Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.

  1. 01

    Connect your apps

    Authenticate Linnworks and Resend with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.

    • OAuth 2.0
    • SSH tunnel
    • VPC peering
    Linnworks connected
    Resend connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Linnworks and Resend objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · Linnworks ⇄ Resend
    Customers 12,480
    Sales Orders 8,213
    Invoices 5,902
    Items 1,344
  3. 03

    Map fields

    Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.

    • Auto-map
    • Type casting
    • Transforms
    Linnworks Resend
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Linnworks and Resend integration FAQ

SECURITY

Security teams love Stacksync

As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.

Learn more about security
SOC 2 type II
ISO 27001
HIPAA BAA
GDPR
CCPA
CSA STAR
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS

SSO & SCIM

Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.

Alerts

Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.

Secure connection options

Securely connects to your systems with:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more

Related integrations

Every pair below is a real-time, two-way sync. Search all 386 integrations available for Linnworks and Resend.

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