Real-time
Two-way sync
Changes in Recurly or Resend instantly reflect in both systems. No stale data, no manual imports.
Accounting and finance ⇄ Business productivity
Recurly to Resend integration — real-time, two-way sync
Keep Recurly 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
Case study
Migrated from MuleSoft
Case study
Migrated from Celigo
Migrated from Heroku Connect
Migrated from Matillion
Case study
Migrated from Fivetran
Case study
Migrated from Celigo
Why teams connect Recurly and Resend
Connect the financial records in Recurly with the work happening in Resend, so both stay current without exports or copy-paste.
Recurly holds the financial truth: who the customers are, what they were billed, what they paid. Resend is where part of the day-to-day work happens, and that work often involves the same customers and transactions. Without a live connection, the two drift apart, and people end up answering questions from stale copies.
Stacksync keeps Measured Units and Usage, Accounts, Subscriptions, Plans in Recurly and Audiences, Broadcasts, Domains, Email events in Resend in sync, bi-directionally and in real time. Whatever records Resend keeps and whatever events it produces, the overlap with Recurly is mapped field by field, and a change on either side shows up on the other within seconds.
There is no middleware to build, no API rate limits to babysit, and no nightly job that leaves the morning running on yesterday's data.
Common use cases
- 01 Post usage records to Measured Units on metered Subscriptions from a metering database before each bill run.
- 02 Sync Accounts and Subscriptions bi-directionally with Postgres so product and provisioning systems read live entitlement state and write plan or seat changes back to Recurly.
- 03 Sync CRM contact segments into Resend Audiences so lifecycle broadcasts target current data.
- 04 Write delivery, bounce, and complaint events back to the CRM or a Postgres table for deliverability reporting.
Common sync patterns
Where Resend tracks people or companies: one identity
A customer's details updated in either system update the other, so finance and the rest of the business stop maintaining two versions of the same customer.
Where Resend handles customer conversations: billing context in view
Front-line teams see invoice and payment status from Recurly next to the customer they are helping, without logging into the finance system.
Where Resend collects payments or triggers charges: events land in Recurly
Payment and charge activity flows into Recurly as it happens, so the books reflect reality without manual reconciliation.
What you can sync between Recurly 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.
| Recurly objects | Resend objects | How this pairing syncs | |
|---|---|---|---|
| Plans The product and pricing catalog (plan codes, intervals, add-ons); usually mastered in Recurly and read out, or mirrored from a product database. | API keys Scoped credentials managed per environment for send and read access. | Plans is specific to Recurly and API keys to Resend — each maps to any object or custom field on the other side. | |
| Invoices Charge and credit billing documents; read-heavy for revenue reporting, and creatable through Purchases for one-off charges. | Emails Sent messages retrievable by ID with current delivery status. | Invoices is specific to Recurly and Emails to Resend — each maps to any object or custom field on the other side. | |
| Transactions Individual payment attempts — captures, refunds, and voids; typically read into a warehouse for reconciliation and dunning analysis. | Contacts Recipient records with email, name, and subscription state, synced from CRMs or databases. | Transactions is specific to Recurly and Contacts to Resend — each maps to any object or custom field on the other side. | |
| Line Items One-time charges and credits on an account outside a subscription; synced for accurate revenue and adjustment reporting. | Audiences Named contact lists that broadcasts target; typically mirrored from CRM segments. | Line Items is specific to Recurly and Audiences to Resend — each maps to any object or custom field on the other side. | |
| Coupons and Redemptions Discount definitions and their application to accounts and subscriptions; read for discount and promotion analysis. | Broadcasts One-to-many campaign sends addressed to an audience. | Coupons and Redemptions is specific to Recurly and Broadcasts to Resend — each maps to any object or custom field on the other side. | |
| Billing Info Tokenized payment method (card/ACH) on an account; written when onboarding customers and read for payment-health signals (never stores raw card numbers). | Domains Verified sending domains with DNS and DKIM status. | Billing Info is specific to Recurly and Domains to Resend — each maps to any object or custom field on the other side. |
How changes propagate between Recurly and Resend
Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.
Recurly Resend Sub-second propagation
DetectionRecurly notifies Stacksync of record changes through webhook events. Webhooks (JSON or XML, one format per endpoint) for account, subscription, payment, and invoice events, plus incremental polling of list endpoints.
DeliveryEach detected change is written to Resend through its API, with automatic retries and rate-limit backoff.
Resend Recurly Sub-second propagation
DetectionResend notifies Stacksync of record changes through webhook events. Webhooks for email lifecycle events.
DeliveryEach detected change is written to Recurly through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Recurly: Production sites default to 1,000 requests/min with only GET requests counting toward the limit; sandbox sites 400/min with all requests counting; the limit is a sliding 5-minute window, X-RateLimit headers report the quota, and breaches return HTTP 429.
What ships with Recurly ⇄ Resend
Connect Recurly and Resend for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Recurly–Resend connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Recurly 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 Recurly or Resend record.
Observability
Monitoring
Track your Recurly ⇄ Resend sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Recurly and Resend.
How the Recurly and Resend connectors work
Recurly
- Integration surface
- REST API (V3, date-versioned; legacy V2 XML API also exists)
- Authentication
- API key via HTTP Basic auth (key as username, blank password); keys are per-site, with separate sandbox and production keys
- Change detection
- Webhooks (JSON or XML, one format per endpoint) for account, subscription, payment, and invoice events, plus incremental polling of list endpoints sorted by updated_at with begin_time/end_time filters
- Capabilities
- read · write · webhooks
- Rate limits
- Production sites default to 1,000 requests/min with only GET requests counting toward the limit; sandbox sites 400/min with all requests counting; the limit is a sliding 5-minute window, X-RateLimit headers report the quota, and breaches return HTTP 429.
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 Recurly 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.
- 01
Connect your apps
Authenticate Recurly 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.
Recurly
connected
Resend
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Recurly 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.
objects · Recurly ⇄ ResendCustomers 12,480Sales Orders 8,213Invoices 5,902Items 1,344 - 03
Map fields
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Recurly ResendCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Recurly and Resend integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Recurly and Resend: authenticate both systems, choose the objects to sync (such as Recurly's Plans and Invoices), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Stacksync is SOC 2 Type II and ISO 27001 certified with HIPAA BAA support. Data is encrypted in transit, and a zero-persistent-storage architecture means Recurly and Resend records are not retained after a sync operation.
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Stacksync pricing is usage-based and starts at $1,000/month, including the managed Recurly and Resend connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Recurly–Resend integration in-house.
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Yes — Stacksync ships production-grade connectors for both Recurly and Resend. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
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Change detection on Recurly: Webhooks (JSON or XML, one format per endpoint) for account, subscription, payment, and invoice events, plus incremental polling of list endpoints sorted by updated_at with begin_time/end_time filters. On Resend: Webhooks for email lifecycle events; polling for contact and audience state. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
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On the Recurly side: Measured Units and Usage, Accounts, Subscriptions, Plans, plus custom fields where Recurly exposes them. On the Resend side: Audiences, Broadcasts, Domains, Email events. Stacksync auto-detects both schemas and converts types between the two systems.
SECURITY
Security teams trust 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.
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:
Related integrations
Every pair below is a real-time, two-way sync. Search all 390 integrations available for Recurly and Resend.
Popular · 7 of 390
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Recurly ⇄ Campfire -
Recurly ⇄ Front -
Recurly ⇄ SendGrid -
Resend ⇄ QuickBooks -
Resend ⇄ Stripe -
Resend ⇄ Coupa -
Resend ⇄ Zuora
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