Transform business infrastructure with the power of APIs.Lob is building a suite of APIs for the enterprise. Built with developers in mind, Lob provides tools that allow businesses to build scalable and powerful applications. The most popular API is a print and mail API that enables companies to send postcards, letters, checks, and more as effortlessly as sending emails. Lob is based in San Francisco, CA, and is venture-backed with over 6000 customers including Intuit, Square, and Counsyl.