Lemlist to DuckDB Integration

How Datrise loads Lemlist into DuckDB

Datrise syncs Lemlist's campaigns, leads, sequences, email events, replies, and activities into DuckDB as a typed table per source entity in a DuckDB file. Flexible or custom fields land in JSON or STRUCT columns, and timestamps such as created, updated, and status changes are typed as TIMESTAMP WITH TIME ZONE.

Sync is incremental: Datrise uses rewrites changed entities into the local database (or Parquet) on each run, so re-runs update only what changed. Hive-partitioned Parquet by load date when exporting. DuckDB is single-writer and embedded, so Datrise produces a consistent file snapshot rather than concurrent streaming writes.

Ideal for local and notebook analytics without standing up a server.

Endpoints

Lemlist: Cold email outreach and sequence automation.

DuckDB: In-process analytics database for fast local OLAP.

How Lemlist entities map to DuckDB

Lemlist entity	DuckDB object	Notes
campaigns	`lemlist_campaigns`	id PK · custom fields → JSON or STRUCT columns
leads	`lemlist_leads`	id PK · linked to lemlist_campaigns
sequences	`lemlist_sequences`	id PK · linked to lemlist_campaigns
email events	`lemlist_email_events`	TIMESTAMP WITH TIME ZONE events

FAQ

How does Datrise handle Lemlist's custom fields in DuckDB?

Flexible values are stored as JSON or STRUCT columns, so new fields don't require a migration; strongly-typed fields — dates, numbers, and references — are promoted to native DuckDB types.

How does the Lemlist to DuckDB sync stay up to date?

It runs incrementally — Datrise uses rewrites changed entities into the local database (or Parquet) on each run.

Related pipelines

Early access

Connect Lemlist to DuckDB the easy way

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