Every mail program is different, and the differences only get bigger when you switch from Mac to PC. Contacts saved in one address book may not be compatible with another by default, but a little ...

You can sync the contacts stored in your iPhone's address book with your PC by syncing the device with iTunes. However, you can perform the syncing only if you use an iTunes-compatible application, ...

Plaxo, which makes software for PC users to keep address books up-to-date, said on Sunday that it is helping millions of members open up their online date books to build social networks like ...