Authentication uses your GHL credentials and requires the scope contacts.readonly for read access. For write operations, request broader scope as needed and securely store tokens.
Maileon requires OAuth2 with client credentials and API keys; ensure the client secret is kept secure and permissions align with operations.
Below are the core endpoints used to manage contacts, tasks, notes, and appointments in Maileon through GHL.
Trigger on contact creation to automatically assign tasks and tags.
Actions: create contact in Maileon, assign initial task, apply tags.
POST /contacts/
Required: name and email; optional: phone, tags, businessId
Trigger when a contact is accessed or updated to sync notes and tasks
Actions: GET /contacts/:contactId, GET /contacts/:contactId/notes, GET /contacts/:contactId/tasks
GET /contacts/:contactId and related resources
Required: contactId
Trigger when contact status changes to ensure data consistency
Actions: PUT /contacts/:contactId, POST /contacts/:contactId/tags, PUT /contacts/:contactId/tasks/:taskId/completed
PUT /contacts/:contactId and tag endpoints
Required: contactId; fields to update; for tags use POST /contacts/:contactId/tags
Automate contact workflows without writing code
Real-time data sync between Maileon and GHL
Centralized visibility into contacts, tasks, notes, and appointments
A quick glossary of terms you will encounter when integrating Maileon with the Contacts API, including endpoints, resources, and data flows
Application Programming Interface: a set of rules that lets apps talk to each other
A specific URL path that performs a defined action in an API
Process of validating access to resources, typically via OAuth tokens or API keys
A callback URL that receives real-time data when an event occurs
Create a guided onboarding sequence that automatically creates a Maileon contact, assigns initial tasks, and records notes.
Use API endpoints to detect duplicates and apply tags to keep profiles clean.
Aggregate contact data, tasks, notes, and appointments for a live insights view.
Register your app, obtain client credentials, and authorize scopes (read and write as needed).
Use sample requests to verify GET and POST operations on /contacts and related resources.
Set up automations in GHL to trigger tasks, notes updates, and tags, then monitor via logs.
The Contacts API uses the scope contacts.readonly to grant read access. If you need write access, request additional scopes and ensure tokens are stored securely. Always test in a staging environment and respect API rate limits.
No coding is required for basic integration thanks to GHL automations. For advanced workflows you can use webhooks or custom scripts to extend capabilities.
Begin with GET /contacts to understand data structures, then GET /contacts/:contactId to retrieve details. Use POST /contacts/ to create new records when needed.
Authenticate using OAuth 2.0 and API keys. Exchange tokens securely, refresh as needed, and rotate credentials regularly.
Yes. You can update contacts with PUT /contacts/:contactId and manage tags with POST /contacts/:contactId/tags. Ensure you pass the required fields for updates.
Common pitfalls include missing or mismatched token scopes, omitting required identifiers like contactId, and underestimating rate limits or pagination.
Refer to the official Maileon and GHL documentation, tutorials, and community forums for deeper guidance and example integrations.
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Complete Operations Catalog - 126 Actions & Triggers
