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Open Platform Program

Give your users a Universal Address Book

Developer Tools

Address Book Access
Give your users access to their up-to-date address book from your website.

Sync API
Synchronize your users' address book.

Where to get help:

What can I do here?

Give your users what they want—a single, up-to-date address book that syncs with the many other address books they already use. Plaxo has already done the hard work of integrating with the most popular address books people use. All you need to do is plug into us.

Why should I implement this?

Asking a user to maintain yet-another-address-book or having your engineering team write a zillion address book import tools is painful and unnecessary.

Plaxo's Open Platform Program offers tools to help you:

  1. Make your address book a Universal Address Book—one that already plugs into Outlook, AOL, Thunderbird, and more.
  2. Use our ready-made import tools to access data from Hotmail, Yahoo!, Gmail and other applications.
  3. Sync your users' Plaxo address book with their address book on your site.
  4. Develop your own services for the millions of Plaxo users out there.

How do I get started?

Get started now! These tools are available to you:

JavaScript Plaxo Address Book Access Widget FREE!
Give your users access to their address book

Plaxo REST Synchronization API FREE!
Offer your users the most up-to-date and complete address book out there

Smarten up Your Address Book with a Plaxo Mashup (PPT)
Presentation at Mashup University on using the Plaxo widget and sync API

Who uses Plaxo?

Millions of people today use Plaxo to store their up-to-date address book and calendar data. Plaxo members can sync their Plaxo address books with their address books in AIM, Outlook, Outlook Express, Thunderbird, Yahoo! and will soon be able to sync with many more. Since Plaxo members keep each other's address books up-to-date automatically, you'll provide your users with the most complete and up-to-date address book available. Learn more.



Support and Community

- Got questions? Check to see if it has already been answered in the FAQs.
- Want to share your knowledge of Plaxo? Visit our Community Forums.
- Need basic information on how the Plaxo service works? Go to Help.




Mail.com worked with Outblaze to integrate Plaxo into the Mail.com experience so their users could access a single, up-to-date address book when sending e-mail.
Solution: Sync API

Now on Zazzle: Spread the word about cool products you can design including posters, t-shirts, cards, and U.S. postage using your Plaxo Address book!
Solution: Address Book Access

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