Just how much of your iPhone's address book – your contacts' names, email addresses and phone numbers – is being stored on Twitter, Apple, and other companies' servers may surprise you. And it ...

Comcast-owned Plaxo used to have a straightforward goal: It helped users maintain their address books. Over time, however, the site has wandered into becoming more of a general social networking ...

Seeking to make its inner workings a part of the fabric of the Internet, Yahoo is opening the interface to its address book.

Its goal is to help third-party developers build applications using the address books behind Yahoo Mail, Messenger, Go and other applications.

President Joe Biden is creating a new anti-book ban coordinator position. CBS News reported an administration official said the coordinator ...

Several readers report an issue where local and IMAP-stored contact and calendar information goes missing, leaving contacts only for connected Exchange servers. Paul Hunrichs writes: "Did the ...

In the Offline Address Book dialog box, make sure that the Download changes since last Send/Receive option is checked. Click OK. Why does Outlook default to Offline Address Book?