Skip to content
Security and identity ⇄ Business productivity

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

Keep Onelogin 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 Onelogin and Resend

Keep the users, groups, and profile details that Resend and Onelogin share consistent in real time, so who can work in Resend always matches who your directory in Onelogin says belongs there.

Onelogin is where a company records who its people are: their accounts, the groups and roles they hold, and the attributes attached to each one. Resend is where a slice of those same people do their work, as agents, members, or seats, and every one of them needs a matching account with the right access. When a directory and a productivity tool are maintained by hand, someone added, moved, or offboarded in one becomes a stale entry in the other within the hour.

Stacksync syncs Email events, API keys, Emails, Contacts in Resend with Events, Authentication factors (MFA), Custom user fields, Users in Onelogin bi-directionally and in real time. A user created, renamed, moved between groups, or deactivated in either system updates the matching record in the other within seconds, with field-level mapping and conflict resolution in place of CSV uploads and nightly IT batch jobs.

That matters most at the edges of employment. When both systems agree on who has an account, which groups they belong to, and whether they are still active, granting access on day one and revoking it on the last day stops being a manual checklist that trails the directory.

Common use cases

  • 01 Sync CRM contact segments into Resend Audiences so lifecycle broadcasts target current data.
  • 02 Write delivery, bounce, and complaint events back to the CRM or a Postgres table for deliverability reporting.
  • 03 Read Users, Apps, and Groups into a database for identity, license, and app-assignment inventory across the OneLogin account.
  • 04 Two-way sync Users between OneLogin and an HRIS or Postgres so new hires, attribute changes, and terminations provision and deprovision SSO accounts automatically.

Common sync patterns

Close access when someone leaves

When a user is disabled or removed in Onelogin, their account in Resend is deactivated in step, so offboarding shuts down access everywhere instead of leaving a live login behind.

Keep profile attributes current

A person's name, email, department, manager, or phone number corrected in either system updates the other, so the productivity tool shows the same details the directory holds of record.

Mirror group and role membership

Moving a user between groups or roles in Onelogin updates their team, permission set, or seat in Resend, so what someone can do reflects where they sit in the directory.

What you can sync between Onelogin 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.

Onelogin objects Resend objects How this pairing syncs
Roles Roles that bundle app access; created, updated, and deleted via the Roles API, with users, admins, and apps assigned to each role. Contacts Recipient records with email, name, and subscription state, synced from CRMs or databases. Roles is specific to Onelogin and Contacts to Resend — each maps to any object or custom field on the other side.
Apps (app instances) Connected SAML/OIDC application configs on the account; create, update, delete, and assign to users and roles - the writable app catalog. Audiences Named contact lists that broadcasts target; typically mirrored from CRM segments. Apps (app instances) is specific to Onelogin and Audiences to Resend — each maps to any object or custom field on the other side.
Groups Account groups used for mapping and reporting; listed and read through the API, which has no create or update endpoint, so groups are read-only. Broadcasts One-to-many campaign sends addressed to an audience. Groups is specific to Onelogin and Broadcasts to Resend — each maps to any object or custom field on the other side.
Mappings (mapping rules) Attribute-driven rules that assign roles and app access; full CRUD via the Mappings API, then reapplied across matching users. Domains Verified sending domains with DNS and DKIM status. Mappings (mapping rules) is specific to Onelogin and Domains to Resend — each maps to any object or custom field on the other side.
Events Audit log of every authentication and admin action; read-only, filtered by since/until, and pushed live through the Event Webhook. Email events Delivered, bounced, complained, opened, and clicked events emitted via webhooks and written back to source systems. Events is specific to Onelogin and Email events to Resend — each maps to any object or custom field on the other side.
Authentication factors (MFA) Per-user registered MFA factors; enrolled, verified, and removed through the MFA API for lifecycle and security workflows. API keys Scoped credentials managed per environment for send and read access. Authentication factors (MFA) is specific to Onelogin and API keys to Resend — each maps to any object or custom field on the other side.

How changes propagate between Onelogin 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.

Onelogin Resend Sub-second propagation

DetectionOnelogin notifies Stacksync of record changes through webhook events. Event Webhook (Event Broadcaster) posts batches of Event objects to a registered endpoint in near real time.

DeliveryEach detected change is written to Resend through its API, with automatic retries and rate-limit backoff.

Resend Onelogin Sub-second propagation

DetectionResend notifies Stacksync of record changes through webhook events. Webhooks for email lifecycle events.

DeliveryEach detected change is written to Onelogin through its API, with automatic retries and rate-limit backoff.

Rate-limit considerations

  • Onelogin: Account-level limit of 5,000 API calls per hour shared across all access tokens; responses carry X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset, over-limit calls return HTTP 429, and the count resets each hour. Paid plans can request an increase.
What ships with Onelogin ⇄ Resend

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

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

Real-time

Two-way sync

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

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Onelogin 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 Onelogin or Resend record.

Observability

Monitoring

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

Trading partners

EDI

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

How the Onelogin and Resend connectors work

Onelogin

Integration surface
OneLogin API (REST, v1 and v2 resource endpoints on <subdomain>.onelogin.com) plus the Event Webhook (Event Broadcaster) for event delivery
Authentication
OAuth 2.0 client credentials - an admin generates an API credential pair (client_id + client_secret) in the OneLogin portal and exchanges it at POST /auth/oauth2/v2/token for a bearer access token sent on every call; each credential carries a scope (Manage all, Manage users, Read users, etc.) that governs read vs write.
Change detection
Event Webhook (Event Broadcaster) posts batches of Event objects to a registered endpoint in near real time; the Events API also supports polling with since/until time filters and pagination for historical backfill.
Capabilities
read · write · webhooks
Rate limits
Account-level limit of 5,000 API calls per hour shared across all access tokens; responses carry X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset, over-limit calls return HTTP 429, and the count resets each hour. Paid plans can request an increase.

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

    Choose tables

    Pick the Onelogin 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 · Onelogin ⇄ 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
    Onelogin Resend
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
Try interactive demo
FAQ

Onelogin and Resend integration FAQ

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.

Learn more about security
SOC 2 Type II
ISO 27001
HIPAA BAA
GDPR
CCPA
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 393 integrations available for Onelogin and Resend.

Popular · 8 of 393
All Onelogin integrations All Resend integrations Browse all integrations
Coworkers laughing in front of a laptop in a casual office setting

Your last integration took months.
Your next one takes a prompt.

Book a demo Tour the platform on your own