Two-way sync
Changes in Lemlist or Sysaid instantly reflect in both systems. No stale data, no manual imports.
Keep Lemlist and Sysaid 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 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 Unsubscribes, Webhooks, Team Members, Campaigns in Lemlist with Users, Assets, Configuration Items (CIs), Companies in Sysaid 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.
Payments, replies, messages, or tickets created in one tool can create or update matching records in the other, keeping context in one place.
Information that originates in Lemlist stays current in Sysaid instead of going stale after a one-time paste.
When work started in one tool continues in the other, the shared fields travel with it automatically.
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.
| Lemlist objects | Sysaid objects | How this pairing syncs | |
|---|---|---|---|
| Webhooks Hook subscriptions define which activity events are pushed to external endpoints. | Custom Fields Org-specific fields on service records, discoverable through the API so mappings can be generated without hardcoding names. | Webhooks is specific to Lemlist and Custom Fields to Sysaid — each maps to any object or custom field on the other side. | |
| Team Members Sender and seat records map outreach activity to reps in other systems. | Incidents Break/fix tickets under /api/v1/sr with type=incident; created and updated two-way with status, priority, assignee, category, and SLA fields. | Team Members is specific to Lemlist and Incidents to Sysaid — each maps to any object or custom field on the other side. | |
| Campaigns Outreach campaigns are the container leads are pushed into from CRMs and list-building workflows. | Service Requests Catalog and help-desk requests on the same /sr endpoint (type=request); written or read so fulfillment can be driven from another system. | Campaigns is specific to Lemlist and Service Requests to Sysaid — each maps to any object or custom field on the other side. | |
| Leads Per-campaign prospect records sync in from enrichment sources and back out with status. | Problems Root-cause records that group related incidents; read and written to keep problem management aligned with an external ITSM or reporting store. | Leads is specific to Lemlist and Problems to Sysaid — each maps to any object or custom field on the other side. | |
| Activities Engagement records such as opens, clicks, replies, and bounces sync to CRM timelines. | Changes Change records (type=change) with approval and scheduling fields; synced two-way to drive CAB review and deployment workflows. | Activities is specific to Lemlist and Changes to Sysaid — each maps to any object or custom field on the other side. | |
| Unsubscribes Opt-out records propagate to other outreach tools and the CRM for compliance. | Users End users and admins on the /users endpoint; synced with an HRIS or identity source to keep requester and agent records current. | Unsubscribes is specific to Lemlist and Users to Sysaid — 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.
DetectionLemlist notifies Stacksync of record changes through webhook events. Webhooks on outreach activity events, plus polling.
DeliveryEach detected change is written to Sysaid through its API, with automatic retries and rate-limit backoff.
DetectionSysaid notifies Stacksync of record changes through webhook events. Webhooks (beta) push sr.created and sr.updated events with changed-field diffs and an X-Sysaid-Signature.
DeliveryEach detected change is written to Lemlist through its API, with automatic retries and rate-limit backoff.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Lemlist–Sysaid connection.
Changes in Lemlist or Sysaid instantly reflect in both systems. No stale data, no manual imports.
Trigger automated workflows whenever Lemlist or Sysaid data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.
Handle millions of events per minute without losing a single Lemlist or Sysaid record.
Track your Lemlist ⇄ Sysaid sync health, view errors, and replay failed events in one click.
Transform legacy EDI complexity into simple database interactions between Lemlist and Sysaid.
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 Lemlist and Sysaid 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 Lemlist and Sysaid 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 Lemlist and Sysaid: authenticate both systems, choose the objects to sync (such as Lemlist's Webhooks and Team Members), map fields visually, and changes propagate both ways in milliseconds — no code required.
Change detection on Lemlist: Webhooks on outreach activity events, plus polling. On Sysaid: Webhooks (beta) push sr.created and sr.updated events with changed-field diffs and an X-Sysaid-Signature; otherwise poll the /sr endpoint filtering on update_time.gte. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
On the Lemlist side: Unsubscribes, Webhooks, Team Members, Campaigns, plus custom fields where Lemlist exposes them. On the Sysaid side: Users, Assets, Configuration Items (CIs), Companies. 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 Lemlist and Sysaid: Where one tool produces events: mirror them in the other; Where Sysaid is where the team documents or plans: keep its data fed; Handoffs between teams. Payments, replies, messages, or tickets created in one tool can create or update matching records in the other, keeping context in one place.
Lemlist: REST API. Authentication: API key. Sysaid: REST API (JSON). Authentication: Client-credentials app keys: an application key (clientId/clientSecret) is created via /v1/application-keys, then exchanged at /v1/access-tokens for a bearer token (default 24h, up to 30 days); an x-sysaid-accountid header scopes the account. Legacy V0 uses session-cookie login. Stacksync manages authentication, retries, and rate limits on both sides.
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.
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Every pair below is a real-time, two-way sync. Search all 396 integrations available for Lemlist and Sysaid.