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Heysan

Heysan is a YC Winter 2007 (W07) company. Based in San Francisco, CA, USA.

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  • Messaging

About Heysan

GPAgent's own fund-neutral profile, written from public information. Updated Oct 5, 2026.

Summary

Heysan built a free mobile messaging service that connected phones and computers, bridging SMS with instant messaging for everyday consumers. The service grew into a broader mobile community platform. Good Technology acquired Heysan in May 2009.

Business model

Free to users

From the Y Combinator listing

How Heysan describes itself in Y Combinator's public directory. Original listing (opens in a new tab)

Free messaging on mobile phones

Heysan was a free mobile messaging and community based in San Francisco, California. Initially Heysan provided free messaging between phones and computers, bridging IM with SMS. The service expanded into launching a mobile community and has over 1 million users doing tens of million of monthly messages. In the summer of 2007 Heysan raised a seed round from Khosla Ventures and Atomico, the venture funds of Vinod Khosla and Niklas Zennstrom. Heysan was acquired by Good Technology in May 2009.

Facts

Industry
Consumer / Consumer -> Social
Location
San Francisco, CA, USA
Status
Acquired
Stage
Early

Founders (4)

  • Gustaf Alstromer
    Founder/CEO
  • Marie Brattberg
    Founder/Product Manager
  • Pär Lindhe
    Founder/Product Development / UX lead
  • Parham Michael Ossareh
    Founder/developer, tech dude

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