Put Letterhead to work with AI and enterprise-grade automation
Automate smarter with Letterhead and scale with confidence. Zapier is built for enterprise-grade security, compliance, and performance.
- No-code AI automation
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- 9,000+ apps, 450+ AI tools
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Or pick an app to pair with
Airtable
Databases
Google Forms
Forms & Surveys, Google
Mailchimp
Marketing Automation
Donorbox
Fundraising
OptinMonster
Forms & Surveys
Gravity Forms
Forms & Surveys, WordPress
Chargebee
Payment Processing
Google Sheets
Google, Spreadsheets
Gmail
Email, Google
Airtable
Databases
Google Forms
Forms & Surveys, Google
Mailchimp
Marketing Automation
Donorbox
Fundraising
OptinMonster
Forms & Surveys
Gravity Forms
Forms & Surveys, WordPress
Airtable
Databases
Google Forms
Forms & Surveys, Google
Mailchimp
Marketing Automation
Donorbox
Fundraising
OptinMonster
Forms & Surveys
Gravity Forms
Forms & Surveys, WordPress
Chargebee
Payment Processing
Google Sheets
Google, Spreadsheets
Gmail
Email, Google
Join millions worldwide who automate their work using Zapier
Launch your first automated workflow
Manage new or updated Google Forms responses by adding or updating audience members in Letterhead
Add or update Mailchimp subscribers when new or updated audience members are detected in Letterhead
Supported triggers and actions
Zapier helps you create workflows that connect your apps to automate repetitive tasks. A trigger is an event that starts a workflow, and an action is an event a Zap performs.
- Channel
Try ItTriggerInstant- ChannelRequired
Try ItTriggerInstant- Promotion Campaign Details Changed
Triggers when Promotion Campaign Details are updated.
Try ItTriggerInstant - Promotion Campaign Purchased
Triggers when a Promotion Campaign has been purchased from the Letterhead store.
Try ItTriggerInstant
- ChannelRequired
Try ItTriggerInstant- Promotion Campaign Created
When a new promotion campaign is created, this event will trigger.
Try ItTriggerInstant - Promotion Campaign Promotion Changed
When a promotion that's part of a larger Promotion Campaign changes, this event will fire.
Try ItTriggerInstant - Promotion Campaign Status Changed
Triggers when the status of a Promotion Campaign changes.
Try ItTriggerInstant
For builders
Let your AI safely access Letterhead
Go beyond Zap workflows. Install Zapier in your AI to call Letterhead actions directly from your agents—with governance built in. Authenticate once. Revoke access anytime.
No code
Install Zapier MCPCall actions in natural language with Zapier MCP
Act in Letterhead from your AI—no exposed credentials, and you control which actions your AI can touch. One install covers 9,000+ other apps.
Example actions on this page
Works with
Claude · ChatGPT · Cursor · Any MCP-compatible AI
Code
Open the SDK docsWork in code with the Zapier SDK
Expose Letterhead actions from backend services, scripts, or agent code. Zapier handles the OAuth and scoped permissions. Access 9,000+ apps, plus thousands more with .fetch().
Install
npm install @zapier/zapier-sdk npm install -D @zapier/zapier-sdk-cli zapier-sdk login # create a Letterhead connection @ https://zapier.com/app/assets/connections
Run an action
// Typescript
import { createZapierSdk } from "@zapier/zapier-sdk";
const zapier = createZapierSdk();
const { data: connection } = await zapier.findFirstConnection({ app: "letterhead", owner: "me" });
await zapier.runAction({
app: 'letterhead',
action: 'add_curation',
connection: connection.id,
input: {
{inputKeyValuePairs}
},
});Direct API calls to raw endpoints through fetch are not yet subject to org-level app and action restrictions.
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