Real-time
Two-way sync
Changes in Lemlist or Postgres Heroku instantly reflect in both systems. No stale data, no manual imports.
Business productivity ⇄ Database
Lemlist to Postgres Heroku integration — real-time, two-way sync
Keep Lemlist and Postgres Heroku 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 Lemlist and Postgres Heroku
Mirror Lemlist's data into Postgres Heroku so your own code can read and write it like any other table, with changes flowing both ways in seconds.
Engineers integrate with tools like Lemlist through APIs, which means auth, pagination, rate limits, webhooks, and retry logic, all maintained forever and all different for every tool. Meanwhile the data would be trivial to use if it simply lived in Postgres Heroku.
Stacksync mirrors Activities, Unsubscribes, Webhooks, Team Members from Lemlist into Follower Databases, Tables, Views, Materialized Views in Postgres Heroku and keeps both sides in sync in real time. Your services query the database directly, and inserts or updates your code makes flow back into Lemlist, so the tool and the database never disagree.
Common use cases
- 01 Push enriched leads from a warehouse or list-building workflow into Lemlist campaigns automatically
- 02 Propagate unsubscribes and bounces back to the CRM and other outreach tools for suppression compliance
- 03 Reflect billing and subscription records into the app database so product logic reads local rows
- 04 Expose CRM objects as Postgres tables the Heroku application can query and join directly
Common sync patterns
One integration pattern for the whole stack
Every synced tool looks the same from the database, so each new integration is configuration, not a new codebase.
Read Lemlist with a query
Records from Lemlist are ordinary rows in Postgres Heroku; join them, index them, and use them in application logic without touching the vendor API.
Automate Lemlist from your codebase
Write to the synced tables in Postgres Heroku and Stacksync propagates the change into Lemlist, replacing custom integration code.
What you can sync between Lemlist and Postgres Heroku
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 | Postgres Heroku objects | How this pairing syncs | |
|---|---|---|---|
| Leads Per-campaign prospect records sync in from enrichment sources and back out with status. | Materialized Views Precomputed result sets synced outward on refresh. | Leads is specific to Lemlist and Materialized Views to Postgres Heroku — 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. | Schemas Namespaces that scope which tables a sync reads and writes. | Activities is specific to Lemlist and Schemas to Postgres Heroku — 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. | Primary and Unique Keys Match keys for idempotent upserts from connected systems. | Unsubscribes is specific to Lemlist and Primary and Unique Keys to Postgres Heroku — each maps to any object or custom field on the other side. | |
| Webhooks Hook subscriptions define which activity events are pushed to external endpoints. | JSONB Columns Semi-structured payloads for nested SaaS objects and metadata. | Webhooks is specific to Lemlist and JSONB Columns to Postgres Heroku — 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. | Sequences Generate surrogate keys for rows created by inbound syncs. | Team Members is specific to Lemlist and Sequences to Postgres Heroku — 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. | Follower Databases Heroku-managed read replicas usable as low-impact sync sources. | Campaigns is specific to Lemlist and Follower Databases to Postgres Heroku — each maps to any object or custom field on the other side. |
How changes propagate between Lemlist and Postgres Heroku
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.
Lemlist Postgres Heroku Sub-second propagation
DetectionLemlist notifies Stacksync of record changes through webhook events. Webhooks on outreach activity events, plus polling.
DeliveryEach detected change is applied to Postgres Heroku as a row-level write, with types converted between the two schemas.
Postgres Heroku Lemlist Interval-based propagation
DetectionStacksync polls Postgres Heroku for changes on an incremental schedule, reading only records changed since the previous pass. Trigger-based capture or polling in most configurations.
DeliveryEach detected change is written to Lemlist through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Lemlist: Subject to the platform's API rate limits.
- Postgres Heroku: No API rate limits; connection counts and performance are bounded by the Heroku Postgres plan.
What ships with Lemlist ⇄ Postgres Heroku
Connect Lemlist and Postgres Heroku for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Lemlist–Postgres Heroku connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Lemlist or Postgres Heroku 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 Lemlist or Postgres Heroku record.
Observability
Monitoring
Track your Lemlist ⇄ Postgres Heroku sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Lemlist and Postgres Heroku.
How the Lemlist and Postgres Heroku connectors work
Lemlist
- Integration surface
- REST API
- Authentication
- API key
- Change detection
- Webhooks on outreach activity events, plus polling
- Capabilities
- read · write · webhooks
- Rate limits
- Subject to the platform's API rate limits
Postgres Heroku
- Integration surface
- SQL wire protocol (standard PostgreSQL)
- Authentication
- Database credentials from the Heroku DATABASE_URL config var; SSL required
- Change detection
- Trigger-based capture or polling in most configurations; log-based logical replication availability depends on plan and Heroku's managed server settings
- Capabilities
- read · write
- Rate limits
- No API rate limits; connection counts and performance are bounded by the Heroku Postgres plan
How it works
How to connect Lemlist to Postgres Heroku — 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 Lemlist and Postgres Heroku with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Lemlist
connected
Postgres Heroku
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Lemlist and Postgres Heroku 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 · Lemlist ⇄ Postgres HerokuCustomers 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.
Lemlist Postgres HerokuCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Lemlist and Postgres Heroku integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Lemlist and Postgres Heroku: authenticate both systems, choose the objects to sync (such as Lemlist's Leads and Activities), map fields visually, and changes propagate both ways in milliseconds — no code required.
-
Common patterns for Lemlist and Postgres Heroku: One integration pattern for the whole stack; Read Lemlist with a query; Automate Lemlist from your codebase. Every synced tool looks the same from the database, so each new integration is configuration, not a new codebase.
-
Lemlist: REST API. Authentication: API key. Postgres Heroku: SQL wire protocol (standard PostgreSQL). Authentication: Database credentials from the Heroku DATABASE_URL config var; SSL required. Stacksync manages authentication, retries, and rate limits on both sides.
-
Lemlist: Activity events such as replies, opens, bounces, and unsubscribes can be delivered via webhooks, enabling near real-time updates to CRM records without polling every campaign. Postgres Heroku: Credentials are managed by Heroku through the DATABASE_URL config var and can rotate, so integrations should tolerate credential changes. Stacksync's field mapping accounts for these differences between Lemlist and Postgres Heroku 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 Lemlist and Postgres Heroku records are not retained after a sync operation.
-
Stacksync pricing is usage-based and starts at $1,000/month, including the managed Lemlist and Postgres Heroku connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Lemlist–Postgres Heroku integration in-house.
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
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 333 integrations available for Lemlist and Postgres Heroku.
Popular · 3 of 333
No integrations match .
