# Lob integrations: postcards, letters and checks

> Create a postcard, create a letter and create a check in Lob. Connect Lob to the rest of your marketing stack with Tray.ai.

**Canonical page:** https://tray.ai/connectors/lob-integrations/
**Categories:** Marketing
**Connects through:** HTTP Connector

## Overview

Lob is a direct mail and address verification service that prints and posts letters, postcards, self-mailers and checks from API calls, and checks US and international addresses. Tray.ai connects to Lob through the HTTP Connector, so your workflows can call the Lob API alongside the rest of your stack.

## Use cases

### Postcards

Read, create, and delete postcards in Lob from any Tray.ai workflow. The Lob API covers calls such as create a postcard and list postcards.

- Create a postcard
- List postcards
- Retrieve a postcard

### Letters

Read, create, and delete letters in Lob from any Tray.ai workflow. The Lob API covers calls such as create a letter and list letters.

- Create a letter
- List letters
- Retrieve a letter

### Checks

Read, create, and delete checks in Lob from any Tray.ai workflow. The Lob API covers calls such as create a check and list checks.

- Create a check
- List checks
- Retrieve a check

### Addresses

Read, create, and delete addresses in Lob from any Tray.ai workflow. The Lob API covers calls such as create an address and list addresses.

- Create an address
- List addresses
- Retrieve an address

### Address verifications

Work with address verifications in Lob from any Tray.ai workflow. The Lob API covers calls such as verify a US address and verify an international address.

- Verify a US address
- Verify an international address
- Autocomplete a US address

### Templates

Read, create, update, and delete templates in Lob from any Tray.ai workflow. The Lob API covers calls such as create a template and list templates.

- Create a template
- List templates
- Update a template

## Challenges Tray.ai solves

### Keeping Lob credentials out of logs

A raw API call usually means pasting a key or token into the request, where it ends up in step inputs, logs, and screenshots.

**How Tray.ai helps:** Store Lob credentials once as a Tray.ai authentication and reference them from the HTTP Connector. Tray.ai masks authentication values in logs, so the secret never shows up in a step's input or output.

### Going from the Lob API docs to a working call

Translating an example request from API docs into a workflow step means copying the method, URL, headers, and body by hand.

**How Tray.ai helps:** Paste a cURL example from the Lob API docs into the HTTP Connector and Tray.ai fills in the method, URL, headers, and body for you.

### Handling files and non-JSON responses

Not every API answers in JSON. Some return XML, files, or binary data, or expect a multipart upload.

**How Tray.ai helps:** The HTTP Connector parses JSON and XML responses, returns files you can pass to the next step, and sends multipart form data for uploads.

## Frequently asked questions

### Does Tray.ai connect to Lob?

Yes. Tray.ai connects to Lob through the HTTP Connector, which calls the Lob API directly. Any call the Lob API documents can run as a step in a Tray.ai workflow.

### How does Tray.ai authenticate with Lob?

The Lob API uses basic authentication. You save it once as a Tray.ai authentication, and the HTTP Connector adds it to every request.

### Can I get a dedicated Lob connector?

Lob runs through the HTTP Connector rather than a dedicated connector. If your team wants one, the Tray.ai connector SDK can build a dedicated Lob connector from the Lob API.

## Learn more

- Intelligent Integration: https://tray.ai/platform/intelligent-ipaas/
- Merlin Agent Builder: https://tray.ai/platform/merlin-agent-builder/
- Agent Gateway for MCP: https://tray.ai/platform/agent-gateway/
- Book a demo: https://tray.ai/contact/