formerly Devpost

Context.IO App Challenge

Email is the data source, Context.IO is the tool.
What you dream up to build with it is up to you.

  • Cash Prizes $125,000
  • Submission Period May 12–Sep. 1st, 2015

View the winners here!



  • Fred Wilson

    Fred Wilson

    Founder and Managing Partner of Union Square Ventures

  • Brad Feld

    Brad Feld

    Managing Director, Mobius Venture Capital and Foundry Group

  • David Cohen

    David Cohen

    Co-Founder and Managing Director of TechStars

  • Matt Blumberg

    Matt Blumberg

    Co-Founder, CEO, and Chairman of Return Path

  • Joshua Baer

    Joshua Baer

    Founder and Executive Director, Capital Factory


  • trophy Grand Prize $50,000
  • trophy 1st runner-up $25,000
  • trophy 2nd runner-up $15,000

Bonus Prizes (Overall Winners can claim these too!)

Best student app
Best parsing app*
Best growth in an app during submission period
Popular Choice
Large Organization Recognition Award
Non-cash, recognition only for organizations with 50+ employees

Ready to get started?

Check out our interactive developer console. The "Explore" tab breaks down all of our resources and allows you to test all of our calls before you start heads-down development.


What can you build with Context.IO?

Context.IO is a RESTful API that makes it simple to connect to email servers and build apps on top of your user’s email data. And, it works with any email server that uses IMAP (That’s nearly all of them).

You may be wondering what you could possibly build with email data. Have you ever stopped to think about all of the different things we use our email account for?

  • storing receipts and coupons
  • sharing photos
  • managing tasks and projects
  • receiving notifications from other applications
  • making appointments
  • storing documents
  • keeping track of travel itineraries
  • managing relationships
  • tracking things to read
  • saving contact information
  • collaborating with a group
  • having discussions

Want to see more examples of email data in action to get the creative juices flowing? Browse a few of the existing apps built using Context.IO:

* Receipt parsing is currently in beta. Reach out to for more information and to get started.