Put Letterby to work with AI and enterprise-grade automation
Automate smarter with Letterby and scale with confidence. Zapier is built for enterprise-grade security, compliance, and performance.
- No-code AI automation
- Full audit trails and controls
- SOC 2 and GDPR compliant
- Easy visual workflow builder
- 9,000+ apps, 450+ AI tools
- Free tier available
Or pick an app to pair with
MailerLite
Marketing Automation
MailerLite
Marketing Automation
MailerLite
Marketing Automation
Join millions worldwide who automate their work using Zapier
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.
- List IDRequired
Try ItTriggerPolling- Contact IDRequired
Try ItTriggerPolling- NameRequired
- List IDRequired
- Audience Mode
- Filters
ActionWrite- List IDRequired
- EmailRequired
- First Name
- Last Name
- Phone Number
- Additional data
- Unsubscribed
- isVerified
- Points
- Referrals
- Address
- isGDPR
- Name
- Instagram
- Twitter
- Website
- Company
- Country
- City
ActionWrite
- New List
Triggers when a new list is created.
Try ItTriggerPolling - List IDRequired
Try ItTriggerPolling- Contact IDRequired
- EmailRequired
- ActionRequired
- PointsRequired
ActionWrite- Reward IDRequired
ActionWrite
For builders
Let your AI safely access Letterby
Go beyond Zap workflows. Install Zapier in your AI to call Letterby 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 Letterby 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 Letterby 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 Letterby 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: "letterby", owner: "me" });
await zapier.runAction({
app: 'letterby',
action: 'create_audience',
connection: connection.id,
input: {
{inputKeyValuePairs}
},
});Direct API calls to raw endpoints through fetch are not yet subject to org-level app and action restrictions.