Direct mail
APIs designed for developers

Extend your applications into the physical world with automated direct mail and powerful address data—delivered through cloud-based APIs.

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Powerful APIs built for scale

Lob’s Print & Mail APIs and Address Verification APIs allow you to easily integrate offline communications into your apps, internal systems, or marketing stack. Flexible scalability allows you to send 100 or 100 million mailpieces in minutes.

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Transform outdated, manual processes with Lob’s easy-to-integrate APIs

Integrate with RESTful APIs to streamline workflows for direct mail, address data, and identity verification at scale

Trigger postcards, self mailers, letters, and checks on demand directly from your CRM or custom applications

Leverage Lob's scalable on-demand Print Delivery Network to create and send mailpieces more efficiently

Hyper-personalize content programmatically

Connect to sources of customer data including marketing automation platforms and CRMs to tailor messaging for each individual

Update dynamic content with HTML templates and merge variables

Include offer codes, unique URLs, or QR codes to track ROI

Get visibility in every step of the direct mail process

Track every mailpiece with powerful webhooks

Report on real-time and historic mail statuses for compliance audits

Meet compliance requirements with
smart webhooks

Our industry-leading security is trusted by Fortune 500 companies and is built into every aspect of Lob.

SOC 2 Type 2 and HIPAA, and GDPR compliant

Signed webhooks with HMAC signatures

Protect personal data with end-to-end encryption and scheduled deletion

Report on real-time and historic mail statuses for compliance audits

Modern SaaS technology

Modern SDKs in programming languages like PHP, Python, Ruby, Java, Elixir, TypeScript, and C#/.NET

Explore Lob APIs with REST clients (Postman and Insomnia)

UI libraries and components in JavaScript frameworks like React & Vue

Integrate through low-code, no-code solutions like Zapier and Make, or popular marketing & workflow automation tools like Salesforce, Braze, Iterable, and Hubspot

Get our most popular developer resources

API documentation

Quickstart guide

SDK and client libraries

Use cases

We were amazed with how well written Lob Address Verification API is; the codes are super constrained and understandable. It only took 30 minutes for us to explain to our engineers how we wanted this to run, and they didn’t even have a single question.

Jane Smith

Position Title, Lob

Explore customer stories

Direct mail automation resources for insurance providers

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eBook

The Modern Marketer’s Guide to Intelligent Direct Mail: Financial Services & Banking Edition

Learn how intelligent direct mail by modernizing and optimizing your financial services direct mail practices to deliver stellar consumer experiences.

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eBook

The Modern Marketer’s Guide to Personalization

Get the best tips and tricks for personalized direct mail that will help you stand out from the competition and create memorable customer experiences.

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eBook

Modernizing Direct Mail Communications: A Fireside Chat With Oscar Health

Gain insight into how Oscar Health implements technology in a way that best serves their organization’s needs, not just immediately, but in the long term.

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