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Letterhead Help Center
APIs & Webhooks
Get Started
Audience
Adding/Updating Audience Members
Profile Fields
Tags & Segments
Engagement
Unsubscribes
Newsletters
Settings and Customizations
Creating Content
Features & Tools
Workflows
Promotions
Promotions
Placing & Running Promotions
Campaigns
Dynamic Content
RSS Feeds
Managing Curations
Letterhead Browser Extension
Settings
Account Management
Domain Management
APIs & Webhooks
Reporting
Automations
Support & New Feature Requests
FAQ
Letterhead API Documentation
Please refer to our
Postman documentation
for this information.