Lemlist to Salesmate integration — real-time, two-way sync

Yes. Stacksync provides a managed, real-time two-way integration between Lemlist and Salesmate: authenticate both systems, choose the objects to sync (such as Lemlist's Activities and Unsubscribes), map fields visually, and changes propagate both ways in milliseconds — no code required.

On the Lemlist side: Unsubscribes, Webhooks, Team Members, Campaigns, plus custom fields where Lemlist exposes them. On the Salesmate side: Companies, Deals, Activities, Pipelines and Stages. 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 Salesmate: Where Lemlist supplies contact or company data; Where Lemlist can store CRM context: fields kept current; Where Lemlist runs outreach. Enriched fields land directly on records in Salesmate, and refreshes keep them from going stale.

Lemlist: REST API. Authentication: API key. Salesmate: REST API. Authentication: Access token (API key) sent as a request header. Stacksync manages authentication, retries, and rate limits on both sides.

Lemlist: Lemlist's data model attaches leads to campaigns, so cross-campaign views of a prospect are assembled by the consuming system rather than provided natively, which makes CRM sync the practical system of record. Salesmate: Salesmate organizes CRM data into Contacts, Companies, Deals, and Activities modules, each supporting custom fields that syncs can read and write. Stacksync's field mapping accounts for these differences between Lemlist and Salesmate without custom code.