Two-way sync
Changes in Outreach or Seismic instantly reflect in both systems. No stale data, no manual imports.
Keep Outreach and Seismic in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.
Two CRMs in one company is more common than anyone plans for: an acquisition brings its own system, regions or business units standardize differently, or a migration is under way and both are live. In every case, some of the same companies and people exist in both systems, and every day of manual double entry pushes the copies further apart.
Stacksync syncs Sequences, Sequence states, Mailings, Calls in Outreach with User Groups, Teamsites, LiveSend Links, Digital Sales Rooms in Seismic in real time and in both directions, with field-level mapping and matching on identifiers you choose. Update a record in either CRM and the other reflects it within seconds.
When one CRM is replacing the other, run both fully live until cutover, with no snapshot gap and no data freeze.
Where each CRM serves a different team or region, sync just the shared accounts and contacts so handoffs and cross-sell work.
Deal stage and value on shared accounts stay visible from either 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.
| Outreach objects | Seismic objects | How this pairing syncs | |
|---|---|---|---|
| Users Seat holders used to resolve ownership on synced records | Users User records managed through SCIM 2.0 and legacy user endpoints; created, updated, and deactivated for provisioning sync. | Same entity on both sides — records pair one-to-one and field-level changes reconcile in both directions. | |
| Prospects The people being engaged; the main record kept in sync with the CRM | Reporting Activities Content-interaction, engagement, and usage analytics extracted read-only through the ETL-oriented Reporting API v2 for a warehouse. | Prospects is specific to Outreach and Reporting Activities to Seismic — each maps to any object or custom field on the other side. | |
| Accounts Companies grouping prospects, aligned with CRM account ownership | Library Content Documents, decks, and assets stored in teamsites; created, moved, and retrieved via the Content Management API, each with a contentId. | Accounts is specific to Outreach and Library Content to Seismic — each maps to any object or custom field on the other side. | |
| Sequences Multi-step cadences; synced as reference data for enrollment automation | Content Versions Version history for a library item; new versions upload via API and old ones expire, with events firing on ContentManager webhooks. | Sequences is specific to Outreach and Content Versions to Seismic — each maps to any object or custom field on the other side. | |
| Sequence states Per-prospect enrollments; writing one adds a prospect to a cadence | User Groups Group definitions and membership that govern content access; synced from an IdP or HRIS to keep permissions current. | Sequence states is specific to Outreach and User Groups to Seismic — each maps to any object or custom field on the other side. | |
| Mailings Sent emails with engagement data, pulled for activity analytics | Teamsites Tenant-scoped workspace partitions organizing Library content, permissions, and config; scoped by teamSiteId on most content calls. | Mailings is specific to Outreach and Teamsites to Seismic — each maps to any object or custom field on the other side. |
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.
DetectionOutreach notifies Stacksync of record changes through webhook events. Webhook subscriptions on resource create, update, and destroy events, plus polling.
DeliveryEach detected change is written to Seismic through its API, with automatic retries and rate-limit backoff.
DetectionSeismic notifies Stacksync of record changes through webhook events. Webhooks for content, version, user, group, workflow, DSR, and LiveSend events.
DeliveryEach detected change is written to Outreach through its API, with automatic retries and rate-limit backoff.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Outreach–Seismic connection.
Changes in Outreach or Seismic instantly reflect in both systems. No stale data, no manual imports.
Trigger automated workflows whenever Outreach or Seismic data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.
Handle millions of events per minute without losing a single Outreach or Seismic record.
Track your Outreach ⇄ Seismic sync health, view errors, and replay failed events in one click.
Transform legacy EDI complexity into simple database interactions between Outreach and Seismic.
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.
Authenticate Outreach and Seismic with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Pick the Outreach and Seismic 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.
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Yes. Stacksync provides a managed, real-time two-way integration between Outreach and Seismic: authenticate both systems, choose the objects to sync (such as Outreach's Users and Prospects), map fields visually, and changes propagate both ways in milliseconds — no code required.
Yes — Stacksync ships production-grade connectors for both Outreach and Seismic. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
Change detection on Outreach: Webhook subscriptions on resource create, update, and destroy events, plus polling. On Seismic: Webhooks for content, version, user, group, workflow, DSR, and LiveSend events; the Reporting API v2 is polled for batch historical extracts (ETL-oriented, not high-frequency). Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
On the Outreach side: Sequences, Sequence states, Mailings, Calls, plus custom fields where Outreach exposes them. On the Seismic side: User Groups, Teamsites, LiveSend Links, Digital Sales Rooms. 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 Outreach and Seismic: Migration with a parallel run; Divisional or regional split; Where both track pipeline: deal visibility across systems. When one CRM is replacing the other, run both fully live until cutover, with no snapshot gap and no data freeze.
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.
Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.
Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.
Securely connects to your systems with:
Every pair below is a real-time, two-way sync. Search all 522 integrations available for Outreach and Seismic.