Connect Sub-Zap by Zapier and Lob to power AI-driven automation

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Choose a Trigger

Choose an Action

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Zapier makes it easy to integrate Sub-Zap by Zapier with Lob - no code necessary. See how you can get setup in minutes.

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1. Choose trigger event

2. Choose action

1. Select the event

Setup

Test

App

Trigger event

Choose a trigger event

Choose a trigger

A trigger is the event that starts your Zap—like a "Start a Sub-Zap" from Sub-Zap by Zapier.

Add your action

An action happens after the trigger—such as "Send Letter" in Lob.

You’re connected!

Zapier seamlessly connects Sub-Zap by Zapier and Lob, automating your workflow.

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.

- Input / Argument List
- Zap_id
- Blank_sample_notice
Trigger
Instant
Try It
- Output / Return Values
- Zap_path_run_id
- Zap_run_id
Action
Write
- Description
- Size
- Front File for Postcard
  Required
- Back File for Postcard
  Required
- To Address Name
- To Address Company
- To Address Line 1
  Required
- To Address Line 2
- To Address City
- To Address State
- To Address Zip
- To Address Country
- From Address Name
- From Address Company
- From Address Line 1
- From Address Line 2
- From Address City
- From Address State
- From Address Zip
- Mail Type
- Send Date
- Use Type
  Required
- Idempotency Key
- QR Code Position
- QR Code Redirect URL
- QR Code Width
- QR Code Top
- QR Code Right
- QR Code Left
- QR Code Bottom
- QR Code Pages
- QR Code Logo URL
- QR Code Background Color
- QR Code Foreground Color
Action
Write
- Recipient
- Primary Line
  Required
- Secondary Line
- City
- State
- Postal Code
- Country
  Required
Action
Write
- Recipient
- Primary Line
  Required
- Secondary Line
- Urbanization
- City
- State
- Zip Code
Action
Write

- Select Your Account
  Required
- Select Your Sub-Zap
  Required
- Parent_zap_directions
- Live_testing_info
- Blank_sample_notice
- Zap_path_run_id
Action
Write
- Description
- File
  Required
- Color
  Required
- Address Placement
- Double Sided
- To Name
- To Address Company
- To Address Line 1
  Required
- To Address Line 2
- To Address City
- To Address State
- To Address Zip
- To Address Country
- From Address Name
- From Address Company
- From Address Line 1
  Required
- From Address Line 2
- From Address City
  Required
- From Address State
  Required
- From Address Zip
  Required
- Mail Type
- Return Envelope
- Custom Envelope
- Perforated Page
- Extra Service
- Send Date
- Use Type
  Required
- Idempotency Key
- QR Code Position
- QR Code Redirect URL
- QR Code Width
- QR Code Top
- QR Code Right
- QR Code Left
- QR Code Bottom
- QR Code Pages
- QR Code Logo URL
- QR Code Background Color
- QR Code Foreground Color
Action
Write
- Description
- Size
- Inside File for Self-Mailer
  Required
- Outside File for Self-Mailer
  Required
- To Address Name
- To Address Company
- To Address Line 1
  Required
- To Address Line 2
- To Address City
  Required
- To Address State
  Required
- To Address Zip
  Required
- From Address Name
- From Address Company
- From Address Line 1
- From Address Line 2
- From Address City
- From Address State
- From Address Zip
- Mail Type
- Send Date
- Use Type
  Required
- Idempotency Key
- QR Code Position
- QR Code Redirect URL
- QR Code Width
- QR Code Top
- QR Code Right
- QR Code Left
- QR Code Bottom
- QR Code Pages
- QR Code Logo URL
- QR Code Background Color
- QR Code Foreground Color
Action
Write
- Single Line US Address
  Required
Action
Write

For AI agents & developers

Use Sub-Zap by Zapier and Lob with AI agents and code

Beyond Zap workflows. Call Sub-Zap by Zapier and Lob actions directly from your AI client or your codebase, using the same 9,000+ app integrations Zapier already runs.

No code

Connect via Zapier MCP

Expose Sub-Zap by Zapier and Lob actions as tools in any MCP client. Authenticate once, then call them in natural language.

Example actions on this page

Call a Sub-Zap
Send Letter

Works with

Claude · ChatGPT · Cursor · any MCP-compatible client

Connect Zapier MCP

Typescript

Call from code with the Zapier SDK

Trigger Sub-Zap by Zapier and Lob actions from backend services, scripts, or agent code.

Install

# TypeScript / Node
npm install @zapier/zapier-sdk

Run an action

import { createZapierSdk } from '@zapier/zapier-sdk';

const zapier = createZapierSdk();
await zapier.runAction({ /* sub-zap-by-zapier / lob action */ });

Run the SDK docs

There is no Python package yet. SDK is TypeScript-only (@zapier/zapier-sdk). The MCP server URL is personal to your account; get it at zapier.com/mcp.

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93%

Customers who say using Zapier has made them better at their job

25m

Customers have created over 25 million Zaps on the platform

6 mins

The average user takes less than 6 minutes to set up a Zap

Connect Sub-Zap by Zapier and Lob to integrate crucial parts of your business

With Zapier, you can integrate everything from basic data entry to end-to-end processes. Here are some of the business-critical workflows that people automate with Zapier.

Automate your lead management and improve conversions

With Zapier, you can automate every part of your lead funnel and give yourself the best chance at converting leads. Automate everything from lead capture to outreach to reporting—and close more deals as a result.

Create more impactful campaigns with automation

Measuring campaign performance across platforms can get chaotic. Plus, digging up the right metrics costs you precious time and effort. With Zapier, you can create a centralized view of your performance, skillfully manage your lists, and ensure your campaigns drive ROI across the business.

Provide world-class support with a little help from automation

Support reps can't be productive when they have to track down crucial information for every incident or ticket. With Zapier, you can automatically send your reps the context they need to resolve tickets quickly and create a seamless customer experience.

Automate your way to actionable, up-to-date data

The days of manually exporting and importing data are over. With Zapier, you can send data where it needs to go, in the format you need it—so you can centralize your data and unlock more insights.

Resolve incidents faster with automation

Your technical support team wants to focus on tech tickets rather than admin work. With Zapier, you can automate everything from ticket creation to routing to inter-team communication—eliminating friction from incident management and increasing speed to resolution.

Learn how to automate Sub-Zap by Zapier on the Zapier blog

Make work flow with AI

Level up your Sub-Zap by Zapier to Lob integration with AI. Extract, summarize, and transform your integration data with leading AI models like OpenAI, Anthropic, and more.

Learn about AI automation

About Sub-Zap by Zapier

Build reusable Zap components and systems by building and calling "Sub-Zaps".

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About Lob

Lob makes it easy to seamlessly print and mail letters, postcards, photos, posters and more via a web API.

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