API and Done.

Transform business infrastructure
with the power of APIs.

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Print & Mail

Programmatically send personalized postcards, letters, and checks to your customers with comprehensive per-piece mail tracking and analytics.

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Address Verification

Use our USPS-certified, global address verification APIs to keep your customer database accurate and ensure that your products and mail reach the right person every time.

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A million ways to use it.

Lob is the best platform there is for turning Address Quality and Direct Mail into competitive advantages for your business.

Address Quality

Address Enrichment

Gain valuable insights from your addresses.

Transactional Mail

Customer Billing

Automatic invoices and statements.

Payment Collections

Collections letters that get you paid.

Compliance Notices

Be audit-ready.

Marketing Direct Mail


Keep them coming back with personalization.


Optimize your customer conversion rates.

Trusted by great companies.

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Product integration is a breeze.

Seamlessly add Address Quality and Direct Mail capabilities into your applications using Lob's modern REST APIs.

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Smart mail. The right address. It all starts with Lob.

It's dead-simple to get up and running, and our experts are here to help at every step.

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