API Uptime
We ensure API uptime with high availability and redundant infrastructure.
Response Time
CampaignLark offers fast and reliable API performance with minimal latency.
Webhook Events
Contacts, tags, segments, emails, bounces, and form submissions.
Everything you need to
connect your tech stack
Access a full suite of integration tools designed to help you move data securely
between CampaignLark and your favorite third-party applications.
Contacts API
Search, create, update, and delete contacts. Add or remove tags, manage fields, and sync subscriber data programmatically.
Outgoing Webhooks
Get notified in real time when contacts subscribe, unsubscribe, or trigger events. Push data to your backend instantly.
Custom Events
Track any user action via the Event API. Fire custom events from your app to CampaignLark and trigger workflows or automations.
Incoming Webhooks
Accept data from external forms and services. Subscribe, unsubscribe, or update contacts from any third-party tool with no code required.
Tags, Fields & Segments
List tags, fields, and segments via the API. Query contacts within any segment and manage taxonomy without touching the dashboard.
Signed Webhooks
Every outgoing webhook includes an HMAC-SHA256 signature, automatic retries with backoff, and covers 15+ event types across contacts, emails, tags, segments, and forms.
Connect your stack in three simple steps
From first API call to production-ready integration,get up and running in minutes with clear docs and predictable responses.
Grab Your API Key
Generate an API key from your workspace settings. Authenticate every request and start making calls in seconds.
Sync Your Data
Create or update contacts, manage tags and fields, and query segments. Use the Event API to track custom actions from your app.
Listen & React
Use webhooks to listen for events and react in real-time. Trigger workflows, update data, or notify your app when contacts interact.
Built for developers who ship fast
Clean endpoints, predictable responses, and interactive docs -everything you need to integrate confidently and move quickly.
Reliable Signed Webhooks
Every outgoing webhook includes an HMAC-SHA256 signature and retries up to 8 times with exponential backoff. Incoming webhooks let external tools subscribe, unsubscribe, or update contacts directly.
Friendly API Documentation
Every endpoint is documented with request and response examples, parameters, and error codes. Copy-paste ready so you can start building right away.
Templating via API
Use Handlebars-powered templates with variables, conditionals, and helpers. Pass event data via the API and let the template engine handle the rest.
API Usage Stats
Monitor your daily API request volume directly from the dashboard. Track usage trends over time so you always know how your integration is performing.
Advanced marketing tools built for your success
From drag-and-drop builders to complex automation workflows,we provide everything to engage your audience effectively.
