# Harry Zhang

> Harry Zhang is the Co-Founder of Lob, the direct mail automation platform he built from scratch with Leore Avidar after Y Combinator's Summer 2013 batch. Inspired by his own frustrations managing clunky direct mail campaigns at Microsoft, Zhang coded Lob's first APIs himself and grew the company to over $100 million in annual revenue, $79.5M in total funding, and 12,000+ business customers. A Forbes 30 Under 30 honoree (Enterprise Technology), he holds degrees in Informatics and Business from University of Michigan's Ross School of Business and remains on Lob's board of directors.

- **Role:** Co-Founder and Board Member at Lob
- **Organizations:** Lob, Y Combinator, Microsoft, Roland Berger Strategy Consultants, Ford Motor Company
- **Nationality:** American
- **Education:** B.A. / B.B.A. in Informatics and Business Administration, University of Michigan, Ross School of Business
- **Known for:** Forbes 30 Under 30 - Enterprise Technology category, Co-built Lob's founding APIs from scratch, personally coding the first version, Grew Lob from $0 to over $100M in annual revenue

## Career timeline

- **~2009-2011** — Early career roles at Ford Motor Company
- **2011-2013** — Field marketing and operations at Microsoft, managing direct mail campaigns for Office products (Project and Visio)
- **2012-2013** — Associate at Roland Berger Strategy Consultants
- **2013** — Co-founded Lob (initially called Printbox / Infraprint) with Leore Avidar after being accepted into Y Combinator Summer 2013 batch
- **2013** — Launched Lob's first developer APIs; built initial version hands-on, literally printing and mailing from a home printer
- **2013** — Raised $2.4M seed round (November 2013)
- **2014** — Closed Series A funding
- **2015** — Launched Address Verification API alongside Series B ($20M)
- **2017** — Print & Mail API 2.0 released
- **2018** — Expanded Lob platform to include checks
- **2019** — Named one of fastest-growing companies in North America
- **2021** — Closed $50M Series C led by YC Continuity Fund (February 2021)
- **2023** — Lob hits $100M annual revenue milestone with 40% YoY growth
- **Ongoing** — Serves as Co-Founder and Board Member at Lob; company operates with ~350 employees and 12,000+ business customers

## Achievements

- Forbes 30 Under 30 - Enterprise Technology category
- Co-built Lob's founding APIs from scratch, personally coding the first version
- Grew Lob from $0 to over $100M in annual revenue
- Secured $79.5M+ in total venture funding across 5 rounds
- Y Combinator Summer 2013 alumnus
- Platform delivers mail to one in two U.S. households
- Trusted by 12,000+ businesses including major enterprises
- Pioneered the concept of 'Stripe for printing' - developer-first direct mail APIs

## Latest updates

- **2023-04** — Lob announces hitting $100M in annual recurring revenue with 40% year-over-year growth
- **2021-02** — Lob closes $50M Series C funding round led by Y Combinator Continuity Fund, bringing total funding to $79.5M+

## Links

- Website: https://lob.com
- LinkedIn: https://www.linkedin.com/in/zhangha/
- Twitter/X: https://x.com/harryzhang
- GitHub: https://github.com/harry-zhang
- Facebook: https://www.facebook.com/lob

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Profile page: https://yespress.io/harry-zhang
Published by YesPress — https://yespress.io
Last updated: 2026-05-26