Interested to use our API?

Join our developer program

Step 1: Get a Key
Step 2: Build
Step 3: Submit App

Get a key and start building

Download the SDK

What you'll get:

  • Library
  • Code Samples
  • Documentation


iOS (v2.5.0) Download »
Android (v2.5.0) Download »
.Net (v2.5.0) Download »
Java (v2.5.0) Download »
PHP (v2.5.0) Download »
Try your code using our Interactive Console

If you already have an API key you should check out our interactive console to test out calls in real-time.

If you need to get an API key, you will need to register with our developer site (hosted at Mashery) and during the registration process you will be given a key and access to our test environment. Please note that you need to have a valid YouSendIt account to properly test your application utilizing our APIs.

Developer's Guide

YouSendIt provides a reliable and secure solution to send and share files and folders from web, desktop, and mobile applications; and you can incorporate this capability into your application via our API.  You're open to develop applications that allow users to create shared folders and collaborate on projects by sharing documents, creative assets, photos, videos and more.  Get more details from our Developer's Guide.

If you have questions please send us an email.

Featured integrations
Author, Inc

By integrating YouSendIt into their application, users can quickly and easily publish their own cookbooks faster than it takes to bake a souffle.

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WinZip released ZipSend, an application that allows large files to be sent easily within email. Using our API they were able to build a robust sending service fand gain subscribers quickly.

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