The Postalytics Direct Mail API

The Fastest Way to Add REST based Direct Mail to Your Stack – No Print Ops Required.

✓ Automate, personalize and scale your direct mail program with game-changing Postalytics features.

✓ Personalize & track mail at scale for higher engagement and ROI.

✓ Seamless integration with your existing tech stack.

✓ SDK’s in multiple languages to speed up your development process.

✓ Multi-tenant environment with margin on each mailer & white-label options.

View API Docs Get a Free Account & API Key

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The Direct Mail API for Developers Who Value Their Time

The Direct Mail REST API is designed to get you started quickly. Send your first mailer with just a few lines of code using robust SDK’s or direct HTTPS calls.

Leverage the power of the industry-leading Postalytics direct mail automation platform without becoming a direct mail expert.

Mock and dev environments let you catch errors, validate workflows, and test performance—before you trigger a real-world print job. It’s like unit testing your way to the mailbox.

Whether you’re integrating Postalytics into a CRM, marketing automation, data platform or a custom application, the Direct Mail API provides all the tools you need for efficient & scalable direct mail marketing.

Complete API Access for Direct Mail That Moves Fast

Take advantage of the class leading Postalytics direct mail automation infrastructure for mailing throughout the U.S. and Canada

Send Mail

Send personalized, automated postcards, letters, self-mailers anywhere in the United States and Canada.

Account Management

Create, retrieve, update, and manage accounts programmatically.

Mailer Template Creation

Design and manage mail piece templates using HTML or image-based designs

List and Contact Management

dd, update, retrieve, and manage lists and contacts.

Campaign Management

Create, manage and track the mailing and response for automated direct mail campaigns.

Campaign Events

Retrieve all events for campaigns and contacts in any campaign.

Flow Creation & Enrollment

Launch & manage multi-touch Flows and easily enroll/unenroll contacts to/from the flow

Webhooks & Integrations

Enable real-time event notifications and pre-built integrations with third-party CRMs & other applications.

Login Links

Programmatically created authenticated links to auto login users from your third-party application

Suppression List Management

Create, update and manage suppression lists for efficiency & savings

Get Campaign Stats

Get the details of a specific campaign

Manage Campaign Status

Update and manage campaign status for testing and deployment

Built in SDKs to Get Started in Minutes, not Days

The Postalytics direct mail API offers fully maintained SDKs in popular languages like Python, Node, Rust, Java, Go, and C#—so you can skip boilerplate and focus on building features. Each SDK includes complete support for our API endpoints, with methods and models that match our documentation exactly.

✓ Reduce repetitive code with native functions for authentication, campaign setup, mailpiece submission & tracking.

✓ Catch errors earlier with built-in request validation and predictable response handling.

✓ Stay up to date with SDKs that evolve automatically as the Postalytics API grows – no manual patching or maintenance required.

Whether you’re prototyping or scaling, the SDKs help you get production-ready faster – with fewer surprises along the way.

Postalytics API Get Campaign Stats Python

The Only Direct Mail API with Multi-client & Margin Options

Combine the direct mail API with the Postalytics Agency Edition to enable multiple client accounts in your automated direct mail workflows. Key features include:

✓ Unlimited Client Accounts – programmatically generate client accounts for clean management of campaigns & billing.

✓ Margin management Add markup to client mailings & receive payouts automatically.

✓ Credit distribution Purchase direct mail credits in bulk and distribute them into client accounts.

✓ Creative control & distribution Manage creative options for clients with template management tools.

Only Postalytics gives you the tools you need to manage automated direct mail workflows in a multi-client environment.

Skip the UI Build

Express Windows are embeddable, white-labeled Postalytics components that handle the complex, visual workflows of direct mail—so your developers don’t have to.

Instead of building your own front-end to support creative setup, list management, campaign configuration, and analytics, you can drop in secure, prebuilt UI elements that live inside your app and carry your brand.
With Express Windows, your users can:

✓ Design and proof creative templates using the full Postalytics editor.

✓ Launch campaigns via guided workflows that match your campaign structure.

✓ View dashboards and analytics for all campaigns—no API calls needed.

✓ Manage mailing lists with pre-built import tools, segmentation, and validation.

Why it matters:

Express Windows reduce development time, eliminate front-end complexity, and accelerate your time to market—all while delivering a polished, consistent user experience.