Real-time
Two-way sync
Changes in Ironclad or Resend instantly reflect in both systems. No stale data, no manual imports.
Business productivity
Ironclad to Resend integration — real-time, two-way sync
Keep Ironclad 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
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Adopted by fast-scaling companies moving mission-critical data in real time
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Why teams connect Ironclad and Resend
Stop re-entering the same information in Ironclad and Resend: Stacksync keeps the records they share consistent in real time, in both directions.
Two tools in the daily stack often hold overlapping information: the same people, the same companies, or the same pieces of work, described twice. The tools do different jobs, so consolidating is not the answer; the overlap just needs to stop drifting.
Stacksync syncs Workflow Documents, Workflows, Records, Entities in Ironclad with Emails, Contacts, Audiences, Broadcasts in Resend in real time. You choose which records overlap, map the fields that should match, and pick a direction or let changes flow both ways. From then on, an update made in either tool is reflected in the other within seconds, without exports or copy-paste.
Because the sync is field-level, each tool keeps its own extras; only the shared data is held in agreement.
Common use cases
- 01 Pull executed contract PDFs from Records attachments into a document store or archive as each workflow completes.
- 02 Two-way sync Ironclad Records with a warehouse or ERP so executed-contract value, counterparty, renewal dates, and status stay current without manual re-keying.
- 03 Feed open and click events into a warehouse for engagement analytics alongside product data.
- 04 Sync CRM contact segments into Resend Audiences so lifecycle broadcasts target current data.
Common sync patterns
Handoffs between teams
When work started in one tool continues in the other, the shared fields travel with it automatically.
Where both tools track people or companies: one consistent record
Contact and company details corrected in either tool update the other, so nobody works from the old version.
Where one tool produces events: mirror them in the other
Payments, replies, messages, or tickets created in one tool can create or update matching records in the other, keeping context in one place.
What you can sync between Ironclad 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.
| Ironclad objects | Resend objects | How this pairing syncs | |
|---|---|---|---|
| Records The Repository of executed and stored contracts with metadata (value, counterparty, key dates, type) and attachments; full create, read, update, and delete so signed-contract data and PDFs sync to a warehouse, ERP, or CRM. | Emails Sent messages retrievable by ID with current delivery status. | Records is specific to Ironclad and Emails to Resend — each maps to any object or custom field on the other side. | |
| Entities Structured records for counterparties and other parties linked to workflows and records; read and written to keep company and vendor master data aligned with a CRM or ERP. | Contacts Recipient records with email, name, and subscription state, synced from CRMs or databases. | Entities is specific to Ironclad and Contacts to Resend — each maps to any object or custom field on the other side. | |
| Obligations Post-signature commitments, milestones, and renewal dates tied to contracts; synced two-way to drive renewal, compliance, and finance reporting in downstream systems. | Audiences Named contact lists that broadcasts target; typically mirrored from CRM segments. | Obligations is specific to Ironclad and Audiences to Resend — each maps to any object or custom field on the other side. | |
| Webhooks Event subscriptions that push workflow, approval, signature, document, and comment changes to Stacksync in near real time; created, listed, and deleted through the API across 40+ event types. | Broadcasts One-to-many campaign sends addressed to an audience. | Webhooks is specific to Ironclad and Broadcasts to Resend — each maps to any object or custom field on the other side. | |
| Workflow Approvals Per-workflow approval requests and their state; read to report approval status and cycle time, and status changes arrive live through the workflow_approval_status_changed event. | Domains Verified sending domains with DNS and DKIM status. | Workflow Approvals is specific to Ironclad and Domains to Resend — each maps to any object or custom field on the other side. | |
| Signature Packets The e-signature packets on a workflow (sent, signatures collected, fully signed); read to track signing progress, with packet events delivered by webhook for real-time status. | Email events Delivered, bounced, complained, opened, and clicked events emitted via webhooks and written back to source systems. | Signature Packets is specific to Ironclad and Email events to Resend — each maps to any object or custom field on the other side. |
How changes propagate between Ironclad 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.
Ironclad Resend Sub-second propagation
DetectionIronclad notifies Stacksync of record changes through webhook events. Native webhook subscriptions (POST /webhooks) fire on 40+ workflow, approval, signature, document, and comment events, and Ironclad retries a failing.
DeliveryEach detected change is written to Resend through its API, with automatic retries and rate-limit backoff.
Resend Ironclad Sub-second propagation
DetectionResend notifies Stacksync of record changes through webhook events. Webhooks for email lifecycle events.
DeliveryEach detected change is written to Ironclad through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Ironclad: Limits are enforced per account per minute by endpoint: GET Workflows 400 and POST/PATCH Workflows 40; GET Records 600 and POST/PATCH Records 200; GET Entities 600 and POST/PATCH Entities 200; Webhooks 600; all other endpoints 800. Exceeding a limit returns HTTP 429, and Ironclad recommends exponential backoff with jitter.
What ships with Ironclad ⇄ Resend
Connect Ironclad and Resend for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Ironclad–Resend connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Ironclad 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 Ironclad or Resend record.
Observability
Monitoring
Track your Ironclad ⇄ Resend sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Ironclad and Resend.
How the Ironclad and Resend connectors work
Ironclad
- Integration surface
- REST/JSON Public API (CLM API) at https://na1.ironcladapp.com/public/api/v1 (NA1 and EU1 regions plus a demo/sandbox), with a native Webhooks subscription API; described by an OpenAPI 3.1 spec.
- Authentication
- OAuth 2.0 - Authorization Code grant (PKCE for public clients) and Client Credentials grant for server-to-server; access tokens are Bearer, expire after 6 hours, and every endpoint is gated by a resource scope. The legacy static API bearer token was deprecated on 2024-11-22.
- Change detection
- Native webhook subscriptions (POST /webhooks) fire on 40+ workflow, approval, signature, document, and comment events, and Ironclad retries a failing endpoint up to 10 times over about 13.6 hours with exponential backoff. Otherwise poll the list endpoints by last-updated. There is no database change-data-capture log.
- Capabilities
- read · write · webhooks
- Rate limits
- Limits are enforced per account per minute by endpoint: GET Workflows 400 and POST/PATCH Workflows 40; GET Records 600 and POST/PATCH Records 200; GET Entities 600 and POST/PATCH Entities 200; Webhooks 600; all other endpoints 800. Exceeding a limit returns HTTP 429, and Ironclad recommends exponential backoff with jitter.
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 Ironclad 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 Ironclad 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.
Ironclad
connected
Resend
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Ironclad 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 · Ironclad ⇄ 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.
Ironclad ResendCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Ironclad and Resend integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Ironclad and Resend: authenticate both systems, choose the objects to sync (such as Ironclad's Records and Entities), map fields visually, and changes propagate both ways in milliseconds — no code required.
-
Yes — Stacksync ships production-grade connectors for both Ironclad and Resend. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
-
Change detection on Ironclad: Native webhook subscriptions (POST /webhooks) fire on 40+ workflow, approval, signature, document, and comment events, and Ironclad retries a failing endpoint up to 10 times over about 13.6 hours with exponential backoff. Otherwise poll the list endpoints by last-updated. There is no database change-data-capture log. 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.
-
On the Ironclad side: Workflow Documents, Workflows, Records, Entities, plus custom fields where Ironclad exposes them. On the Resend side: Emails, Contacts, Audiences, Broadcasts. Stacksync auto-detects both schemas and converts types between the two systems.
-
Yes. Each object mapping can be bidirectional or restricted to a single direction (both systems accept writes). Read-only mirrors, one-way pushes, and full two-way sync can be mixed in the same integration.
-
Common patterns for Ironclad and Resend: Handoffs between teams; Where both tools track people or companies: one consistent record; Where one tool produces events: mirror them in the other. When work started in one tool continues in the other, the shared fields travel with it automatically.
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
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