Real-time
Two-way sync
Changes in Resend or Twenty CRM instantly reflect in both systems. No stale data, no manual imports.
Business productivity ⇄ CRM
Resend to Twenty CRM integration — real-time, two-way sync
Keep Resend and Twenty CRM 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 Resend and Twenty CRM
Sync what happens in Resend with the customer records in Twenty CRM, in real time and in both directions.
The CRM is supposed to be the record of every customer relationship, but customer-relevant information also accumulates in the other tools a team runs. Whatever Resend holds or produces that touches a customer, whether conversations, payments, replies, enriched data, or notes, the CRM only benefits if it arrives without someone copying it over.
Stacksync connects Email events, API keys, Emails, Contacts in Resend to Custom Objects, Attachments, Workspace Members, People in Twenty CRM with bi-directional, real-time sync. Activity and record changes in Resend update the matching contact or account in Twenty CRM, and CRM data flows the other way wherever Resend can store and use it.
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.
- Run a continuous sync from a legacy CRM into Twenty during a migration so both systems stay usable through cutover.
- Two-way sync of People and Companies between Twenty and a production Postgres database so engineers can query CRM data with SQL.
Where Resend supplies contact or company data
Enriched fields land directly on records in Twenty CRM, and refreshes keep them from going stale.
Where Resend can store CRM context: fields kept current
Owner, lifecycle stage, or account details from Twenty CRM sync into Resend, so people working there have the context without switching tools.
Where Resend handles support or shared inboxes
Tickets and conversations attach to the right contact and account in Twenty CRM, so sales sees open issues before the next call.
What you can sync between Resend and Twenty CRM
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.
| Resend objects | Twenty CRM objects | |
|---|---|---|
| Email events Delivered, bounced, complained, opened, and clicked events emitted via webhooks and written back to source systems. | Companies Account-level records that group people and opportunities. | |
| API keys Scoped credentials managed per environment for send and read access. | Opportunities Deal records tracked through pipeline stages, synced for forecasting. | |
| Emails Sent messages retrievable by ID with current delivery status. | Tasks To-dos linked to people, companies, or deals. | |
| Contacts Recipient records with email, name, and subscription state, synced from CRMs or databases. | Notes Free-form notes attached to records, useful for mirroring activity from other tools. | |
| Audiences Named contact lists that broadcasts target; typically mirrored from CRM segments. | Custom Objects User-defined objects created in Twenty's data model settings, addressable through the same APIs as standard objects. | |
| Broadcasts One-to-many campaign sends addressed to an audience. | Attachments Files linked to records. |
What ships with Resend ⇄ Twenty CRM
Connect Resend and Twenty CRM for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Resend–Twenty CRM connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Resend or Twenty CRM 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 Resend or Twenty CRM record.
Observability
Monitoring
Track your Resend ⇄ Twenty CRM sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Resend and Twenty CRM.
How the Resend and Twenty CRM connectors work
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
Twenty CRM
- Integration surface
- GraphQL and REST APIs
- Authentication
- API key
- Change detection
- Webhooks on record create, update, and delete events, or polling on record update timestamps
- Capabilities
- read · write · webhooks
- Rate limits
- Subject to the platform's API rate limits; self-hosted deployments control their own limits.
How it works
How to connect Resend to Twenty CRM — 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 Resend and Twenty CRM with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Resend
connected
Twenty CRM
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Resend and Twenty CRM 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 · Resend ⇄ Twenty CRMCustomers 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.
Resend Twenty CRMCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Resend and Twenty CRM integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Resend and Twenty CRM: authenticate both systems, choose the objects to sync (such as Resend's Email events and API keys), map fields visually, and changes propagate both ways in milliseconds — no code required.
-
Resend: The send endpoint supports idempotency keys, which matters when a sync pipeline retries requests. Twenty CRM: Webhooks can be registered on record events, giving push-based change delivery without polling. Stacksync's field mapping accounts for these differences between Resend and Twenty CRM without custom code.
-
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 Resend and Twenty CRM records are not retained after a sync operation.
-
Stacksync pricing is usage-based and starts at $1,000/month, including the managed Resend and Twenty CRM connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Resend–Twenty CRM integration in-house.
-
Yes — Stacksync ships production-grade connectors for both Resend and Twenty CRM. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
-
Change detection on Resend: Webhooks for email lifecycle events; polling for contact and audience state. On Twenty CRM: Webhooks on record create, update, and delete events, or polling on record update timestamps. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
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.
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 386 integrations available for Resend and Twenty CRM.
Popular · 8 of 386
-
Resend ⇄ Oracle CX Sales -
Resend ⇄ Outreach -
Resend ⇄ Salesloft -
Resend ⇄ Salesmate -
Twenty CRM ⇄ Google Sheets -
Twenty CRM ⇄ Klaviyo -
Twenty CRM ⇄ Lemlist -
Twenty CRM ⇄ Lusha
No integrations match .
